I need help solving this problem

Intro You just took out a 15-year traditional fixed-rate mortgage for $500,000 to buy a house. The interest rate is 10.8% (APR) and you have to make payments monthly. Part 1 Attempt 1/10 for 10 pts. What is your monthly payment? Part 2 Attempt 1/10 for 10 pts. How much of your first monthly payment goes towards paying down the outstanding baltance (in \$)? Part 3 Attempt 1/10 for 10 pts. How much of your 13th monthly payment goes towards paying down the outstanding balance (in S)? How much of yciur 13th monthly payment goes towards paying down the outstanding balance (in \$)