Microsoft Corporation Financial Summary for 2023:

• Total Revenue: $300 billion
• Cost of Goods Sold: $120 billion
• Operating Expenses: $90 billion
• Interest Expense: $4 billion
• Tax Expense: $12 billion
• Total Assets: $500 billion
• Total Liabilities: $200 billion

1. Calculate the operating profit margin.
2. Determine the net profit margin.
3. Compute the times interest earned (TIE) ratio.
4. Calculate the equity multiplier.