Berkshire Hathaway Inc. is a multinational conglomerate holding company. For the quarter ended December 31, 20X7, the company reported the following information:

• Total revenue: $60,000,000
• Cost of goods sold: $20,000,000
• Selling and administrative expenses: $12,000,000
• Other operating expenses: $5,000,000
• Income tax expense: $8,000,000 Calculate the company's net income, gross profit margin, operating income, and net profit margin.