Any way of setting up Odoo to calculate price on custom sizes? Lets say we sell blank painting canvas and the customer wants a custom size, ex: 13 1/16" x 21 1/8" and we sell them by at 3$ per square inch. Any way to set that up ? I want the customers to be able to select measurements from dropdown menus (Length x width) and the price to be calculated automatically based on the measurement selection.