For a recent year, McDonalds (MCD) company-owned restaurants had the following sales and expenses (in millions): Sales $15,600 Food and packaging $(5,008) Payroll (3,900) Occupancy (rent, depreciation, etc.) (3,922) General, selling, and administrative expenses (2,300) $(15,130) Operating income $470 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 millio