a field is a product of other field and itself

I have a Product table and order table. in product table i have productname, quantity, price. in order table i have productname(from product table), quantity ordered (manual entry) , and price (which should be price of the product times the quantity ordered). Is there anyway to achieve this in Mendix, Im new to Mendix. Please help.
1 answers

Check the Pizza Mario tutorial project. It has exactly the things you describe.