Requirement 1: Calculate each division's ROI. Round answers to four decimal places. Operating Income / Average Assets = ROI Flat Base $ 456,000 = 34.55% High Gloss $ =7. % Requirement 2: Calculate each division's Profit Margin Ratio. Operating Income = Profit Margin Ratio Flat Base = 8. % High Gloss $ $ = 15.38 % Requirement 3: Calculate each division's Investment Turnover. / Average Total Assets = Investment Turnover Flat Base $ 3,800,000 = 2.88 High Gloss $ = 9