Fill in the missing amounts in each of the eight case situations below. Each case is independent of the others. Required: Assume that only one product is being sold in each of the four following case situations: Assume that more than one product is being sold in each of the four following case situations: Units sold 9,800 19,800 5,500 Sales $343,000 $389,200 $143,000 Variable expenses 156,800 178,200 Fixed expenses 94,000 168,000 81,000 Net operating income (loss) $68,300 $232,800 $(26,000) Contribution margin per unit $17 $16