Need a calculator help!

Hi:
I am really a beginner. I have some php knowledge.

I would appreciate if somebody can post for me the programming for a calculator:

It has to be able to perform a simple arithmetic function, it has to have windows to enter the information and a "calculate" and "reset" buttons.



The calculator should have this display:

RAMP CALCULATOR

Enter rise ( a window to input information in inches)


Calculate Reset

Length for 1: 12 (a window showing the results)
Formula= rise/ 1

Length for 2:12 (a window showing the results)
Formula= rise/2

Length for 3:12 (a window showing the results)
Formula = rise/3

If the person enter the rise, then the result should show up in the 3 length windows.

This is a very simple calculator but... i do not know how to do the coding. Hope somebody would be able to help me:confused:
Thanks
Marriver

This would be a better looking program with Javascripting.
You could even have some graphical animation.

If you have to use PHP (because it's a homework project),
try to code some yourself and show us what you've done.

There are so many tutorials about PHP (use Google to search).

Let us know if Javascripting can be used ...
Like I say, in this case, it would be really beneficial to use Javascripting.