On January 1, your father bought a second hand car for $4200 and agreed to pay for it as follows: 1/3down payment; the balance to be paid in 36 equal monthly payments; the first payment due February...

On January 1, your father bought a second hand car for $4200 and agreed to pay for it as follows: 1/3down payment; the balance to be paid in 36 equal monthly payments; the first payment due February 1; an annual interest rate of 9%, compounded monthly. What is the amount of your father's monthly payment?