Liz Raiborn Inc. has the following financial results for the years 2019 through 2021 for its three regional divisions:

201920202021RevenueSouthwest$14,725$21,825$25,825Midwest6,5256,8257,025Southeast12,22512,82513,125Total$33,475$41,475$45,975Net Operating IncomeSouthwest$925$1,025$1,175Midwest1,0751,4251,375Southeast8251,0251,425Total$2,825$3,475$3,975Average Total AssetsSouthwest$13,825$14,025$16,625Midwest4,5254,0254,025Southeast5,1255,4255,425Total$23,475$23,475$26,075

Required:

Calculate return on sales (ROS), asset turnover (AT), and return on investment (ROI) for each division and also for the firm as a whole for each of the three years 2019, 2020, and 2021. (Note: Due to rounding your percentages, the totals for the firm might not be the actual total of the individual divisions.)(Round "Asset turnover (AT)" answers to 3 decimal places and other answers to 1 decimal place.)