a Required: May Clothing is a retail men's clothing store. May's variable cost is $93.60 per shirt, and the sales price is $187.20 per shirt. May plans to sell 110,000 shirts for the year and, at this level, would generate a before-tax profit of $2,640,000. What is the degree of operating leverage (DOL) at this volume level? (Round your answer to 1 decimal place.) Degree of operating leverage (DOL)