Please help. Please answer all questions below and show all work. I'm just not getting it. Thanks.

Polaski Company manufactures and sells a single product called a Ret Operating at capacity, the company can produce and sell 36,000 Rets per year. Costs associated with this level of production and sales are given below Total Direct materials Direct labor Variable manufacturing overhead Fixed manufacturing overhead Variable selling expense Fixed selling expense $15 $ 540,000 288,000 108,000 252,000 144,000 216,000 Total cost $43 S 1,548,000