Hi there I am new to js and need some help..
Hope you can help. I have a form that on drop down picks a product that uses a formula to generate a calculation.

the first one works, but the others do not and even though I choose the other products from the drop down it still uses the code from the first product in the select box:
code below:

Code:
<script type="text/javascript">

    jQuery(document).ready(function($) {
        //Items
        $("#input_4_11").on('keyup', do_maths);
        //time taken
        $("#input_4_35").on('keyup', do_maths);
        //Hourly Rate
        $("#input_4_14").on('keyup', do_maths);
         
                
        function do_maths()
        {
          

            if($.isNumeric($('#input_4_11').val()) && $.isNumeric($('#input_4_35').val()) && $.isNumeric($('#input_4_14').val())) 
            {
            
                if($(".result-selected").html() !== "Select...")
                {
                    if($(".result-selected").html("Printing drawing"))
                    {
                        //(RTV Xporter, Xporter PRO and Drawing Manager)  = .25
                      costs1 = 0.25;
                      product_cost1 = 49;
                        
                        var qty = $("#input_4_11").val();
                    var hourly = $("#input_4_14").val();
                    var time_taken = $("#input_4_35").val();
                    
                    var time_saved = ((qty * time_taken) - ((qty * time_taken)  * costs1))/60;
                    
              
                    var money_saved = time_saved * hourly;
                    
                    money_saved = money_saved.toFixed(2);
  
                    $('#input_4_20').val(time_saved);
                    
                    
                    //Money Saved---------------------------------------------------------------
                    //(Time Saved / 60) * Hourly Rate
                    $('#input_4_22').val(money_saved);
                    
                    //RTV Product Cost----------------------------------------------------------
                    $('#input_4_24').val(product_cost1 - 5);
                    
                    //Automatic ROI------------------------------------------------------------
                    $('#input_4_23').val(money_saved - product_cost1);
                    
                    }
                    else if($(".result-selected").html("Creating digital files"))
                    {
                        //(RTV Xporter, Xporter PRO and Drawing Manager) = .25
                 costs = 0.25;
                product_cost = 9.99 + 49 + 255;
                        
                        var qty = $("#input_4_11").val();
                    var hourly = $("#input_4_14").val();
                    var time_taken = $("#input_4_35").val();
                    
                    var time_saved = ((qty * time_taken) - ((qty * time_taken)  * costs))/60;
                    
              
                    var money_saved = time_saved * hourly;
                    
                    money_saved = money_saved.toFixed(2);
  
                    $('#input_4_20').val(time_saved);
                    
                    
                    //Money Saved---------------------------------------------------------------
                    //(Time Saved / 60) * Hourly Rate
                    $('#input_4_22').val(money_saved);
                    
                    //RTV Product Cost----------------------------------------------------------
                    $('#input_4_24').val(product_cost);
                    
                    //Automatic ROI------------------------------------------------------------
                    $('#input_4_23').val(money_saved - product_cost);
                    
                    
                    }
                    else if($(".result-selected").html("Combined printing and creating digital files"))
                    {
                        //(RTV Xporter, Xporter PRO and Drawing Manager) = .5
                       // costs = 0.5;
                        //product_cost = 9.99 + 49 + 255;
                        
                    }
                    else if($(".result-selected").html("Update title blocks / drawing sheets"))
                    {
                        //(RTV Drawing Manager) = .1
                         //costs = 0.1;
                        // product_cost = 255;
                    }
                    else if($(".result-selected").html("Adding and updating revisions on title blocks / drawing sheets"))
                    {
                        //(RTV Drawing Manager) = .35
                        //costs = 0.35;
                        //product_cost = 255;
                    }
                    else if($(".result-selected").html("Issue and create documentation transmittal for drawings"))
                    {
                        //(RTV Drawing Manager) = .5
                        //costs = 0.5;
                       // product_cost = 255;
                    }
                    else if($(".result-selected").html("Create and publish digital files to an FTP site"))
                    {
                        //(Xporter Pro)  = .5
                        //costs = 0.5;
                        //product_cost = 49;
                    }
                    else if($(".result-selected").html("Create and update shared parameters "))
                    {
                        //(RTV Shared Parameter Manager) = .15
                        //costs = 0.15;
                       // product_cost = 99.50;
                    }
                    else if($(".result-selected").html("Search and create manufactures specific paint materials"))
                    {
                        //(RTV Paint) = .1
                       // costs = 0.1;
                       // product_cost = 9.99;
                    }
                    else if($(".result-selected").html("Create furniture and fittings schedules"))
                    {
                        //(RTV Reporter) = .65
                    //var    costs = 0.65;
                    //var    product_cost = 75;
                        
                        var qty = $("#input_4_11").val();
                    var hourly = $("#input_4_14").val();
                    var time_taken = $("#input_4_35").val();
                    
                    var time_saved = ((qty * time_taken) - ((qty * time_taken)  * costs))/60;
                    
              
                    var money_saved = time_saved * hourly;
                    
                    money_saved = money_saved.toFixed(2);
  
                    $('#input_4_20').val(time_saved);
                    
                    
                    //Money Saved---------------------------------------------------------------
                    //(Time Saved / 60) * Hourly Rate
                    $('#input_4_22').val(money_saved);
                    
                    //RTV Product Cost----------------------------------------------------------
                    $('#input_4_24').val(product_cost);
                    
                    //Automatic ROI------------------------------------------------------------
                    $('#input_4_23').val(money_saved - product_cost);
                    }
                    //Time Saved-----------------------------------------------------------------
                    /*
                    ((Number of items to Automate *Time taken )*  Hourly Rate/60 -  (Number of items to Automate * Field 1 (these values are below again))
                    */
                    
                }
                else
                {
                    alert("Please go to the top of the page and select a package.");
                }
            }
            else
            {
                //Failed
            }    
        }
        
    });

</script>
can you help me with what I am doing wrong?
thank you in advance..