Engberg Company installs lawn sod in home yards. The company's most recent monthly contribution format income statement follows: Amount $146,000 58,400 Percent of Sales 100% 40% Sales Variable expenses 87,600 16,000 60% Contribution margin Fixed expenses Net operating income 71,600 Required 1. Compute the company's degree of operating leverage. (Round your answer to 2 decimal places.) Degree of operating leverage 2. Using the degree of operating leverage, estimate the impact on net operating income of a 21% increase in sales. (Round your intermediate calculations to 2 decimal places. Round your percentage answer to 2 decimal places (i.e.1234 should be entered as 12.34).) Net operating income by