Liz Raiborn Inc. has the following financial results for the years 2019 through 2021 for its three regional divisions: 2019 2020 2021 $ 14,450 6,250 11,950 $ 32,650 $ 21,550 6,550 12,550 $ 40,650 $25,550 6,750 12,850 $ 45,150 $ Revenue Southwest Midwest Southeast Total Net Operating Income Southwest Midwest Southeast Total Average Total Assets Southwest Midwest Southeast Total 650 800 550 2,000 $ 750 1,150 750 $ 2,650 $ 900 1,100 1,150 $ 3,150 $ $ 13,550 4,250 4,850 $ 22,650 $13,750 3,75 5,150 $22,650 $ 16,350 3,750 5,150 $25,250 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 percentagls, 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.) 2019 2020 2021 Return on sales (ROS) Southwest 2019 2020 2021 Return on sales (ROS) Southwest Midwest Southeast Firm Asset turnover (AT) Southwest Midwest Southeast Firm Return on investment (ROI) Southwest Midwest Southeast Firm