I need a price modification on woocommerce, store sell floor tiles per m2 (sq. meter)

I have a situation an e-shop sell tiles see image diagram Every tile are inside in a box. Every box has square meter (m^2) for example. 2 m2 (sq m.) or diferent I have the bellow problem and I want to know If you can solve it with some custom code\ If a customer needs for example 1 m^2 of tiles Submit in quantity textbox 1 But in cart see 2 m2 (because the specific box of tiles has 2 m^2 in package) Also this I want to work in other example like Customer: 3 m^2 System: 4 m^2 Customer: 4 m^2 System: 4 m^2 Price need to write in back-end and see it in front-end per m^2 But the calculation need to be done with price per m^2 per box has inside every box has diferent m2 inside and i think shop manager needs to write it somewhere in product fields? so, if a website customer visit a tile product must see pictures of pruduct, price per square meter (m2) and one textbox who can write inside the amount of square meter who needs. see an example in a competitors site: [login to view URL]