Contribution Margin and Contribution Margin Ratio For a recent year, McDonald's (MCD) company-owned restaurants had the following sales and expenses (in millions): Sales $29,200 Food and packaging $(9,024) Payroll (7.400) Occupancy (rent, depreciation, etc.) (7,696) General, selling, and administrative expenses (4,200) $(28,320) Operating income $880 Assume that the variable costs consist of food and packaging, payroll, and 40% of the general, selling, and administrative expenses. a. What is McDonald's contribution margin? Round to the nearest million. (Give answer in millions of dollars.) X million b. What is McDonald's contribution margin ratio? % C. How much would operating income increase if same-store sales increased by $1,800 million for the coming year, with no change in the contribution margin ratio or fixed costs? Round your answer to the closest million. million