I can't seem to figure out the margin ratio

eBook Show Me How Contribution Margin Sally Company sells 16,000 units at $16 per unit. Variable costs are $13.44 per unit, and fixed costs are $18,800. Determine (a) the contribution margin ratio, (b) the unit contribution margin, and (c) operating income. a. Contribution margin ratio (Enter as a whole number.) % b. Unit contribution margin ( Round to the nearest cent.) 2.56 per unit c. Operating income 22,160 <