ACMO has been issued with 3 tranches and a residual. At origination: - Tranche A investors own $73 million of principal with a coupon rate of 3.50% Tranche B investors own $32 million of principal with a coupon rate of 3.70%. Tranche Z investors own $8 million of principal with a coupon rate of 4.50%. The residual carries $1 million and receives all residual payments. Mortgages backing the security issued are fully amortizing fixed rate with mortgage rate of 4.50% with 30 year maturities and monthly payments. Assume no servicing/guarantee fee and no prepayments. What is the ending balance on the B-tranche at the end of the first year (same as the beginning balance in the second year)? Round your answers to two decimal points (eg, if your answer is $560000444, write 56000.04)