We currently are in the process of revamping it and moving it over to Shopify. As a floor supplier, our products are shown being sold by the sq/ft. However, we can only sell by the carton, we would like to let the customer select how many square feet they need of a product on the page or in the cart, and have the quantity be shown in cartons needed.So basically, the customer selects the square footage, we calculate the boxes needed and that is the quantity that is placed into the cart. I saw that your company responded to a similar question on Shopify and I am hoping you may be able to help.