Arlington Clothing, Inc., shows the following information for its two divisions for year 1 Lake Region Coastal Region Sales revenue Cost of sales Allocated corporate overhead Other general and administration $4,100,000 $13,010,000 6,505,000 780,600 547,900 3,749,000 2,661,300 246,000 Required a. Compute divisional operating income for the two divisions. Ignore taxes. (Enter your answers in thousands of dollars rounded to 1 decimal place.) Lake Region Coastal Region Operating income b-1. What are the gross margin and operating margin percentages for both divisions? (Enter your answers as a percentage rounded to 2 decimal places (i.e, 32.12).) Lake Region Coastal Region Gross margin percentage Operating margin