Arlington Clothing, Inc., shows the following information for its two divisions for year 1. Sales revenue Cost of sales Allocated corporate overhead Other general and administration Lake Region $4,160,000 2,691,300 249,600 553,900 Coastal Region $13,070,000 6,535,000 784,200 3,755,000 Required: a. Compute divisional operating income for the two divisions. Ignore taxes. b-1. What are the gross margin and operating margin percentages for both divisions? b-2. How well have these divisions performed