I calculated the dupont model for Ford 2001 & GM 2001. I calculated the profit margin, asset turnover, financial leverage and ROE to be as follows. Can someone verify the following to see if I did it correctly:

Profit Margin (PM) = Net income / Sales

PM Ford 2001 = 65,453 / 162,412 = -0.336

PM GM 2001 = 601 / 177,260 = .0033

Asset Turnover (AT) = Sales / Average total assets

AT Ford 2001 = 162,412 / ((276,543 + 284,421) / 2) = 0.579

AT GM 2001 = 177,260 / ((323969 + 303100) / 2) = 0.565

Return on Assets (ROA) = Net Income / Average Total Assets

ROA Ford 2001 = -5,453 / ((276,543 + 284,421) / 2) = -0.194

ROA GM 2001 = 601 / ((323,969 + 303,100) / 2) = .0019

Financial Leverage (FL) = Average Total Assets / Average stockholder's Equity

FL Ford 2001 = ((276,543 + 284,421)/2) / ((7,786 + 18,610)/2) = 21.251

FL GM 2001 = ((323,969 + 303,100)/2) / ((1,970 + 30,175)/2) = 12.571

Return on Equity (ROE) = PM *AT*FL

ROE Ford 2001 = -3.35751% * .579046 * 21.25185 = -41.316%

ROE GM 2001 = 0.33904% * .56536 * 12.57104 = 2.409%