Firms in Japan often employ both high operating and financial leverage because of the use of modern technology and close borrower-lender relationships. Assume the Mitaka Company has a sales volume of 135,000 units at a price of $30 per unit; variable costs are $9 per unit, and fixed costs are $1,900,000. Interest expense is $410,000. What is the degree of combined leverage for this Japanese firm? Note: Round your answer to 1 decimal place