This is pretty simple Excel file.
at this moment, customers need to download, saved and run the file to find the saving!
We would like to make it easy to use and all calculation be on server side.
as you can see there is all equations are just +, -, * or / and no crazy formula.
there is no need for CSS, I will embed the final script into our website.
the final design must have Reset, Calculate Button and also decent place to show the results.