PLEASE provide a very detailed answer so it can be referenced in layman terms, thanks

Required information [The following information applies to the questions displayed below] Kubin Company's relevant range of production is 16,000 to 24,500 units. When it produces and sells 20,250 units, its average costs per unit are as follows: Required: 1. Assume the cost object is units of production: a. What is the total direct manufacturing cost incurred to make 20,250 units? b. What is the total indirect manufacturing cost incurred to make 20,250 units? 2. Assume the cost object is the Manufacturing Department and that its total output is 20,250 units. a. How much total manufacturing cost is directly traceable to the Manufacturing Department? b. How much total manufacturing cost is an indirect cost that cannot be easily traced to the Manufacturing Department