Steps showing how this is solved would be appreciated

Fill in the missing amounts in each of the eight case situations below. Each case is independent of the others. (Hint: One way to find the missing amounts would be to prepare a contribution format income statement for each case, enter the known data, and then compute the missing items.) Required: a. Assume that only one product is being sold in each of the four following case situations: b. Assume that more than one product is being sold in each of the four following case situations: Required A Required B Assume that only one product is being sold in each of the four following case situations: Case #1 Case #2 Case #3 Case #4 Unit sold 8,000 14,700 20,600 5,200 Sales S 200,000 $ 352,800 $ 150,800 Variable expenses 191.100 206,000 83,200 136,000 98,000 171,000 85,000 Fixed expenses Net operating income (loss) Contribution margin per unit S (34,000) $ (9,300) $ 173,800 S (17,400) $ 8 S 11 S 13 S 13 Required A Required B Assume that more than one product is being sold in each of the four following case situations: Case #1 Case #2 Case #3 Case #4 Sales $ 450,000 $ 207,000 297,000 86.130 130,410 62,000 467,000 Variable expenses Fixed expenses Net operating income (loss) Contribution margin ratio (percent) $ 50,500 61,960 $ (16,130) 37 % % 76 % %