Contribution Margin and Contribution Margin Ratio For a recent year, McDonald's (MCB) company-owned restaurants had the following sales and expenses (in millions): Sales $30,300 Food and packaging $(10,032) Payroll (7.600) Occupancy (rent, depreciation, etc.) (7,358) General, selling, and administrative expenses (4,400) $(29,390) Operating income $910 Assume that the variable couts consist of food and packaging, payroll, and 40% of the general, seling, and administrative experien . What in McDonald's contribution margin? Round to the nearest million. (Give answer in millions of dollars.) million b. What is McDonald's contribution margin ratio? c. How much would operating income increase if same store sales increased by $1,600 million for the coming year with no change in the contribution margin ratio orixed COSE? Round your answer to the closest million. million