pls see the xls file, that contain what I need to turn into a dynamic web page (PHP).
pls note that when a user browse the web page, must not be able to see the code used for the calculation.
pls, read the requirements and ask questions
NO CSS needed but positioning of the objects in the page and organisation of the space, size of the text etc yes.
some fine tuning will be needed
I consider 25 a reasonable cost.