Big Truck Industries reported the following items for the current year: Sales = $5,750,000; Cost of Goods Sold = $2,850,000; Depreciation Expense = $195,000; Taxes = $525,000; Administrative Expenses = $175,000; Interest Expense = $57,500; and Marketing Expenses = $135,000. Please show your work when answering the following: 1) What is Big Truck's gross profit? 2) What is Big Truck's operating profit margin? 3) What is Big Truck's operating income? 4) What is Big Truck's gross profit margin?