Question: how does amgen make money?
Answer: Of the $21.7 billion of Amgen's total revenues in FY'15, $4.2 billion were the costs of goods sold. This resulted in $17.4 billion of gross profit and a gross margin of 80.5%. Amgen's other operating costs were $9.0 billion. These include marketing & administrative expenses, and research and development (R&D) expenses.