Not entirely sure if my work for question 1 is correct. Thank you!

FIN 4620 Securitization - Chapter Exercises A bank originates and securitizes 300, $200,000 mortgages. The Mortgage Backed Security (MBS) includes 30-year, fully amortizing loans and is structured with monthly payments. The rate is 10.5%, which includes 50 bps of fees for timing insurance and servicing. 1. What is the original size of the mortgage pool? 300 * 200,000 = 60,000,000 2. What is the monthly payment, per mortgage, paid by each mortgagor? 3. What is the monthly payment, per mortgage, passed-through to the investors? 4. What is the total of the monthly payments for the pool passed through to investors? 5. Even though the payments are monthly, to simplify the remainder of the problem, recalculate the mortgage payments for the pool passed through to investors based on annual payments. FIN 4620 Securitization - Chapter Exercises A bank originates and securitizes 300, $200,000 mortgages. The Mortgage Backed Security (MBS) includes 30-year, fully amortizing loans and is structured with monthly payments. The rate is 10.5%, which includes 50 bps of fees for timing insurance and servicing. 1. What is the original size of the mortgage pool? 300 * 200,000 = 60,000,000 2. What is the monthly payment, per mortgage, paid by each mortgagor? 3. What is the monthly payment, per mortgage, passed-through to the investors? 4. What is the total of the monthly payments for the pool passed through to investors? 5. Even though the payments are monthly, to simplify the remainder of the problem, recalculate the mortgage payments for the pool passed through to investors based on annual payments