How do I calculate the profit margin?

Selected financial data for Amberjack Corporation follows. b. Assuming a 365-day year for all calculations, compute the following: 1. The collection period each year based on sales. 2. The inventory turnover and the payables period each year based on cost of goods sold. 3. The days' sales in cash each year. 4. The gross margin and profit margin each year. Note: Round your answers to 1 decimal place. Negative answers should be indicated by parentheses Profit margin