Help!

You want to buy a new sports coupe for $91,500, and the finance office at the dealership has quoted you an APR of 7.3 percent for a 72 -month loan to buy the car. a. What will your monthly payments be? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.) b. What is the effective annual rate on this loan? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.)