Return on sales (ROS) is a measure of profit per sales dollar; it measures the investment center manager's ability to control expenses and increase revenues to improve profitability.ACME Products is a division of a major corporation. Last year the division had total sales of $21,300,000, net operating income of $575,100, and average operating assets of $5,000,000. The company's minimum required rate of return is 12%.The division's asset turnover is closest to: