Please show all the workings and calculations :)

Q7) In 2018, Power Washer Inc. (PWI), a hardware retail company, sold 2,000 power washers at an average price of $500 per unit. Each power washer was purchased by PWI from a manufacturer in Germany at the cost of $300/unit Operating expenses (including depreciation) for PWI in 2018 were $200,000. PWI made an interest payment of $50,000 to the bank. Finally, PWl's tax rate was 25%. a) Calculate Pwl's gross profit, operating income, earnings before taxes (EBT), and net income (after taxes). (1 pt for each item, 4 pts. total for part (a)) Revenue $ Cost of goods sold (COGS) $ $ Gross profit Operating expenses (incl. depreciation) $ Operating profit Interest expense $ Earnings Before Taxes (EBT) $ Taxes $ Net profit b) What is the gross profit percentage of PWI? (1 pt) c) What is the net profit percentage of PWI? (1 pt)