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

	2019			2020			2021
Revenue
Southwest	$	14,500		$	21,600		$	25,600
Midwest		6,300			6,600			6,800
Southeast		12,000			12,600			12,900
Total	$	32,800		$	40,800		$	45,300
Net Operating Income
Southwest	$	700		$	800		$	950
Midwest		850			1,200			1,150
Southeast		600			800			1,200
Total	$	2,150		$	2,800		$	3,300
Average Total Assets
Southwest	$	13,600		$	13,800		$	16,400
Midwest		4,300			3,800			3,800
Southeast		4,900			5,200			5,200
Total	$	22,800		$	22,800		$	25,400

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.)