Starbucks Corporation reported the following financial information for the fiscal year ending September 30, 2023: Total Revenue of $31,890 million, Operating Expenses of $22,570 million, and Net Income of $7,480 million. The company's total assets were $42,560 million, and total equity was $24,690 million.

Questions:

1. Calculate Starbucks' operating profit margin.
2. Compute Starbucks' net profit margin.
3. Calculate the return on assets (ROA) for Starbucks.
4. Compute the return on equity (ROE) for Starbucks.
5. If Starbucks' total liabilities were $17,870 million, what is the debt to equity ratio?