For a recent year, McDonald's Company-owned restaurants had the following sales and expenses (in millions):

Sales$25,000Food and packaging$9,010Payroll6,300Occupancy (rent, depreciation, etc.)5,340General, selling, and administrative expenses3,600$24,250Income from operations$750

Assume that thevariable costsconsist 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.)

$million

b.What is McDonald's contribution margin ratio?

%

c.How much would income from operations increase if same-store sales increased by $1,500 million for the coming year, with no change in the contribution margin ratio orfixed costs? Round your answer to the closest million.

$million