Help Please

Microsoft has provided the following contribution format income statement. All questions concern tituations that are whithin the relevant ratsed Required: a. What is the contribution margin per unit? b. What is the contribution margin ratio? c. What is the variable expense ratio? d. What is the break-even point in unit sales? e. What is the break-even point in dollar sales? Estimate how many units must be sold to achieve a target profit of $54,000