You are examining a mortgage backed security with the following features:

• $500 million in underlying mortgages (e.g., principal value = $500 million)
• Three time tranches, A, B, and C where the par value of A is $200 million, the par value of B is $100 million, and the par value of C is $200 million. A is senior to B and B is senior to C.
• The weighted average coupon (WAC) is 6%; the pass through rate is 5%
• The security has a weighted average maturity (WAM) of 3 years and payments are made annually (e.g., so it will only make 3 payments).
• Assume no default and no prepayment

What is the ending balance in Year 2 of the total MBS issue?