if you could show me what math is done to get the answers that would be very helpful, thank you!

Problem 6-4A Report inventory using lower-of-cost-or-market (LO6) [The following information applies to the questions displayed below.] A local Chevrolet dealership carries the following types of vehicles: Market (replacement cost) per Unit Cost per Quantity Inventory Items Vans Trucks 2-door sedans 4-door sedans Sports cars SUVs Unit 3 6 2 7 3 $19,500 16,500 11,500 15,500 29,500 27,000 $17,500 15,500 13,500 18,500 32,500 20,500 Because of recent increases in gasoline prices, the car dealership has noticed a reduced demand for its SUVs, vans, and trucks