Selected sales and operating data for three divisions of different structural engineering firms are given as follows: Division A Division B Division C Sales $ 12,000,000 $ 14,000,000 $ 25,000,000 Average operating assets $ 3,000,000 $ 7,000,000 $ 5,000,000 Net operating income $ 600,000 $ 560,000 $ 800,000 Minimum required rate of return 14 % 10 % 16 % Required: 1. Compute the return on investment (ROI) for each division using the formula stated in terms of margin and turnover.