Its the question from mortgage and asset back securities- Fixed income and derivative markets (Subject)

Teddy Tom has a mortgage loan for 1.5 years with principal amount of $100. Mortgage payments are paid every 6 months. He has decided to make 50% prepayment at t=0.5. The annual mortgage rate is 3%, semi- annually compounded. Find the first schedules total payment and the ending balance for teddy tom at t=0.5.