Trev has a series of loan payments coming up. Trev will need to begin paying $4746 at the end of year 8, but the loan amount will decrease each subsequent year by $144. Trev will make the loan payments for 7 years. Trev wants to spread out this cost so he would like to make equal deposits in each year before the first payment. (In other words, by the time of the first payment, Trev will have all of the money saved.) How much does Trev need to deposit each year before the first payment to cover the loan payments? Assume an interest rate of 4% compounded annually.