7. At an output level of 53,000 units, you calculate that the degree of operating leverage is 3.21. Suppose that fixed costs are $175,000. a. What is the operating cash flow at 42,000 units? What is the degree of operating leverage at 42,000 units? b. What is the operating cash flow at 65,000 units? What is the degree of operating leverage at 65,000 units