I need help with this question please. I was able to do part 3a-3c but now I can't figure out parts 3d-3h

3. Problem 10-19 Product versus se ng, genera and administrative costs LO 10 Issa Manufacturing Company was started on January 1, 2014, when it acquired $87,000 cash by issuing common stock. Issa immediately purchased office furniture and manufacturing equipment costing $9,300 and $24,200, respectively. The office furniture had a seven-year useful life and a zero salvage value. The manufacturing equipment had a $3,200 salvage value and an expected useful life of three years. The company paid $11,100 for salaries of administrative personnel and $15,600 for wages to production personnel. Finally, the company paid $17,900 for raw materials that were used to make inventory. A inventory was started and completed during the year Issa completed production on 5,000 units of product and sold 4,000 units at a price of $15 each in 2014. (Assume that all transactions are cash transactions.)