Is it possible to perform calculations on HTML Pages, e.g. on a HTML view I want to call up the count of certain records, and then perform a calculation based on the records count, is this possible?

In my application I have a form Clients and I would like to create a HTML view by which I can see which clients have ordered certain products and the duration when they ordered the products. I need to find out the total worth of the products ordered, by calculating discounts offered, gross price and net price.

is this possible?