Contribution Margin and Contribution Margin Ratio

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

$\backslash$table$[[$Sales$,$$$23,900$

Contribution Margin and Contribution Margin Ratio For a recent year, Wicker Company$-$owned restaurants had the following sales and expenses $($in millions$)$: Sales $$23,900$ Food and packaging $$7,179$ Payroll $6,000$ Occupancy $($rent$,$ depreciation, etc.$)6,501$ General, selling, and administrative expenses $3,500$ $$23,180$ Income from operations $$720$ Assume that the variable costs consist of food and packaging; payroll; and $40\%$ of the general, selling, and administrative expenses. a$.$ What is Wicker Company's contribution margin? Round to the nearest million. $($Give answer in millions of dollars.$)$ $fill in the blank $1$ million b$.$ What is Wicker Company's contribution margin ratio? Round your answer to one decimal place. fill in the blank $2\%$ c$.$ How much would income from operations increase if same$-$store sales increased by $$1,400$ million for the coming year, with no change in the contribution margin ratio or fixed costs? Round your answer to the closest million. $fill in the blank $3$ million