Submitting form variables to Excel sheet
 

I'd like to submit some values from a form in a web page to Excel
sheet, then let the sheet perform some calculations and then send the
results from certain cells back to the user via a web page. I would
prefer to do the calculations purely using ASP/ASP.net as it would be
then trivial task, but unfortunately need the calculations on the
sheet. Any advice how this could be done? Is it possible at all?