Please help me. I am doing this question wrong and am getting the wrong answer from 3)b) forward! Thank you.

Menlo Company distributes a single product. The company's sales and expenses for last month follow Total Sales Variable expenses $308,000 215,600 or Unii $ 20 14 S 6 Contribution margin Fixed expenses 92,400 72,000 Net operating income $20,400 Required 1. What is the monthly break-even point in unit sales and in dollar sales? 12,000 units Break-even point in unit sales Break-even point in sales dollars $ 240,000 2. Without resorting to computations, what is the total contribution margin at the break-even point? Total contribution margin 72,000 3-a. How many units would have to be sold each month to earn a target profit of $37,800? Use the formula method. Units sold 18,300