Contribution margin and contribution margin ratio

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

a$.$ What is McDonald's contribution margin?

$ million

b$.$ What is McDonald's contribution margin ratio? Round to one decimal place.

$\%$

Round your answer to the nearest tenth of a million $($one decimal place$).$

million