Product Calculator on input options

Dear all,
I have a potential customer who wants to have a facility on Open Cart to have a product price calculator by the option inputted by a customer. They are a print company and want to sell banners where they need to have length and width inputted as an option on the product page, then calcuate a price from those inputs. The customer can then add that to the basket.

Do you know if can be done? Is there a module?

I am looking into the same thing! i'll let you know if i come across anything