I don't know what the answer to D and E is. Please help.

Contribution Margin and Contribution Margin Ratio For a recent year, McDugal's company-owned restaurants had the following sales and expenses (in millions) Sales Food and packaging Payroll Occupancy (rent, depreciation, etc. 4,408 General, selling, and admin. expenses 3,000 Other expense Total expenses Operating income (loss) $19,400 $6,892 5,100 390 (19,790) $(390) 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? Enter your answer in million, rounded to one decimal place 6,208 million b. What is McDonald's contribution margin ratio? Round your percentage answer to one decimal place. 32 % c. How much would operating income increase if same-store sales increased by $1,200 million for the coming year, with no change in the contribution margin ratio or fixed costs? 384 million d. What would have been the operating income or loss for the recent year if sales had been $1,200 million more? 6,592 X million e. To achieve break even for the recent year, by how much would sales need to increase? Enter your anwer in million rounded to the nearest whole number. 41,218.75) X million