alyeska services company, a division of a major oil company, provides various services to the operators of the north slope oil field in alaska. data concerning the most recent year appear below: sales $ 18,700,000 net operating income $ 5,100,000 average operating assets $ 36,200,000 required: 1. compute the margin. (round your answer to 2 decimal places.) 2. compute the turnover. (round your answer to 2 decimal places.) 3. compute the return on investment (roi). (round your intermediate calculations and final answer to 2 decimal places.)