ACMO is being issued with 2 tranches: Tranche A has 520 million in principal and a 2.5% coupon. - Tranche B has $5 million in principal and a 4,4% coupon The mortgages backing the security issued are FRM at a mortgage rate of 6.7% with 10 year maturities and annual payments. There is no guarantee/servicer fee. Prepayment is assumed to be 54 CPR. What is the starting pool balance for Tranche A investors in year 22 (Note: same as the ending pool balance for Tranche A Investors in year 1) Round your answer to two decimal points (eg, if your answer is 545,666.6666, write 45666.67)