Need help with a mortgage question is related with MBS.

Question 3 0 out of 10 points Given the following information of the mortgage pool that backs a MPT , what is the regular scheduled payment in month I of the security ? Use WAC as the mortgage rate and WAM as the number of periods for your calculations . Round your final answer to two decimals . . 30 year FRM, fully amortizing , monthly payments . Loans seasoned for 3 months before entering pool . WAM : 357 . WAC : 4% . Servicer / Guarantee fee : 0. 55% . Starting pool balance : 250 , 342 , 967 . Prepayment assumption : 75% PSA Question 4 0 out of 10 points Given the following information of the mortgage pool that backs a MPT ( same as Question 3 ) , what is the dollar amount of prepayment in month I of the security ? Remember PSA is calculated based of month of the mortgage , not the security . Round your final answer to two decimals . . 30 year FIRM , fully amortizing , monthly payments . Loans seasoned for 3 months before entering pool . WAM : 357 . WAC : 4% . Servicer / Guarantee fee : 0. 55 % . Starting pool balance : 250 , 342, 967 . Prepayment assumption : 75% PSA