Feather Friends, Inc., distributes a high-quality wooden birdhouse that sells for $80 per unit. Variable expenses are $40.00 per unit, and fixed expenses total $160,000 per year. Its operating results for last year were as follows: Sales $ 2,000,000 Variable expenses 1,000,000 Contribution margin 1,000,000 Fixed expenses 160,000 Net operating income $ 840,000 Required: Answer each question independently based on the original data: 1. What is the product's CM ratio? 2. Use the CM ratio to determine the break-even point in dollar sales. 3. If this year's sales increase by $44,000 and fixed expenses do not change, how much will net operating income increase? 4-a. What is the degree of operating leverage based on last year's sales? 4-b. Assume the president expects this year's sales to increase by 11%. Using the degree of operating leverage from last year, what percentage increase in net operating income will the company realize this year?