I need help with these cost acct. problems

This first page left blank 9-16. Bills cabinets sells a product for 360 per unit. The company's variable cost per unit i9s 60 dollars for DM, $50 per unit for DL, and #34 per unit for OH. Annual fixed production OH is $74,800, and fixed selling and administrative OH is $50,480. a. What is the contribution margin per unit? b. What is the contribution margin ratio? c. What is the break even point in units d. Using the contribution margin ratio, what is the break even point in sales dollars? e. If Bill's Cabinets wants to earn a pre-tax profit of $51,840, how many units must the company sell