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 $125,000$ units at a price of $$25$ per unit; variable costs are $$5$ per unit and fixed costs are $$1,800,000.$ Interest expense is $$400,000.$

What is the DCL for this Japanese firm? $($Round the final answer to $2$ decimal places.$)$

Degree of combined leverage X