Fitness Fanatics is a regional chain of health clubs. The managers of the clubs, who have authority to make investments as needed, are evaluated based largely on return on investment (ROI. The company's Springfield Club reported the following results for the past year: Sales Net operating income Average operating assets $1,400,000 $ 70,000 $ 350,000 The following questions are to be considered independently. Exercise 10-11 Part 1 Required: 1. Compute the Springfield club's return on investment (ROI). Return on investment (ROI)