Mainland Manufacturing has provided you with their Income statement for 2022. Mainland Manufacturing Ltd. Income Statement Year ended December 31, 2022 Sales (60,000 tires at $75 each) Less: Variable costs (60,000 tires at $50) Contribution margin Less: Fixed costs Earnings before interest and taxes (EBIT) $ 4,500,000 3,000,000 1,500,000 1,250,000 Interest expense Earnings before taxes (EBT) Income tax expense (30%) Earnings after taxes (EAT) 250,000 50,000 200,000 60,000 140,000 They have been told that leverage can be used to magnify the results of the firm and have come to you for advice on how this can be done. Given this income statement, calculate the following: d. Break-even point in units. (Round the final answer to the nearest whole number.) Break-even point tires e. Break-even point considering the interest expense as a fixed cost. Break-even point tires