IBM Corporation is conducting a detailed analysis of its profit margins to identify areas for improvement and strategic decision-making. The company reports total revenue of $10,000,000 and total expenses of $8,000,000 for the period. Within the total expenses, IBM breaks down costs into cost of goods sold, selling and administrative expenses, and interest expenses.

Calculate IBM's gross profit margin, operating profit margin, and net profit margin. Interpret the results and provide recommendations to enhance profitability.