A web page that performs like Excel

I want to develop a webpage that works like an Excel sheet...

it has some textbox where the visitor can enter numbers inside them, then presses on a button "calculate"...then it gives the result in a textbox...

I feel this is easy,,but I dont know how to do it... I know HTML is only for designing the page...but how can i make a code and enter formulas like the ones i do in Excel (e.g. =(B2+B3)*C3)

also is there any software that will make this easy for me?... i am new to web development...

re: A web page that performs like Excel

since you posted in this section i guess you want to use ASP.NET ... so i think the GridView is what your are looking for. here are some examples that might get you started.

kind regards