Help me please in these questions. Thank you

a. 12. Mr. Tharn got a Php 700, 000 loan for the expansion of his business payable monthly in 4 years. How much is the monthly amortization if the rate is 12% compounded monthly? a. 18, 433.68 b. 19,345.21 c. 17,456.22 d. 19,647.58 13. From the problem #12, how much of the 5th payments goes to pay the interest? 1, 487.55 b. 1, 855.23 c. 1, 765.25 d. 1,548.78 14. A consumer loan worth Php 30, 000 is to be repaid in 12 months at 9% convertible monthly. How much is the monthly payment? a. 2, 489.52 b. 2, 547.58 c. 2,623.54 d. 2, 784.52 15. Ms. Saya got a business loan worth Php 900, 000. She promised to pay the loan semi-annually in 3 years. The semi-annual payment is Php 183, 026.37 if money is worth 12% converted semi-annually. How much is the outstanding balance after the first payment? 770, 973.65 b. 769, 054.45 c. 775, 542.52 d. 745, 563.75 a