WHat is the computation for these exercises?

5-31 Straightforward Absorption Statement The Kerwin Company had the following data (in thousands) for a given period: Sales $780 Direct materials 180 Direct labor 230 Indirect manufacturing costs 210 Selling and administrative expenses 130 There were no beginning or ending inventories. Compute the (1) manufacturing cost of goods sold, (2) gross prot, (3) operating income, and (4) conversion cost (total manufacturing cost less materials cost).

5-32 Straightforward Contribution Income Statement Masa, Ltd., had the following data (in millions of yen) for a given period: Sales 990 Direct materials 250 Direct labor 140 Variable factory overhead 65 Variable selling and administrative expenses 115 Fixed factory overhead 110 Fixed selling and administrative expenses 75 There were no beginning or ending inventories. Compute the (a) variable manufacturing cost of goods sold, (b) contribution margin, and (c) operating income.