Hello, Im having trouble with the following question. If I could get help I would really appreciate it: "Consider a sequential pay CMO that is backed by 60 mortgages with average balance of $100,000 each. The mortgages have monthly payments with WAM = 15 years and WAC = 4%. There is a servicing fee of 0.6% and prepayment is according to 100% PSA. There are two tranches in this CMO: tranche A issued for $3,000,000 and tranche B issued for $3,000,000. How much cash flow do investors in tranche A receive in the first month?" Thanks !