I$-$ A loan of S$10000$ at jz$.=8\%$ is to be repaid over $15$ years with semi$-$annual payments $($R $=$ $$620).$a$)$ How much interest is paid in the $16$ payment?b$)$ How much principal is repaid as part of the $31$ payment?$)$c$)$ What is the outstanding balance of the loan after $10$ payments?d: Construct a complete amortization schedule for the Debt for the fust $3$ lines