Company DEF has the following financial data:

• Net Sales: $2,000,000
• Cost of Goods Sold: $1,200,000
• Operating Expenses: $500,000
• Net Income: $200,000
• Total Assets: $3,000,000
• Shareholders' Equity: $1,500,000

1. Calculate the gross profit margin.
2. Determine the operating profit margin.
3. Calculate the net profit margin.
4. Compute the return on assets (ROA).
5. Determine the return on equity (ROE).