You receive a credit card application from Shady Banks Savings and Loan offering an introductory rate of 2.8 percent per year, compounded monthly for the first six months, increasing thereafter to 17.7 percent compounded monthly. Assuming you transfer the $13,500 balance from your existing credit card and make no subsequent payments, how much interest will you owe at the end of the first year? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.)

Interest owed $