Zeldas, a national manufacturer of lawn-mowing and snow-blowing equipment, segments its business according to customer type: Professional and Residential. Assume the following divisional information was available for the past year (in thousands of dollars): (Click the icon to view the information.) Read the requirements. Requirement 1. Calculate each division's ROI. First enter the formula, then calculate each division's ROI using the expanded formula. Residential Professional Interpret your results. Each division's ROI is ROI than the + ROI % % ; however, the has an even higher Requirement 2. Calculate each division's sales margin. Interpret your results. First enter the formula, then calculate each division's sales margin. Residential Professional Sales margin % %