Loan Amortization $(60$ points $-$ Excel or Spreadsheet File Upload Required$)$

Construct a monthly loan amortization schedule for $$350,00030-$year monthly fixed$-$payment mortgage. Loan

repayments are due monthly. The interest rate is $7\mathrm{.}5\%$ per year, and interests are compounding monthly.

What if$,$ one year $($exactly $12$ months$)$ into the loan, your client is able to make $$30,000$ additional payment? How

would this change the loan repayment? How much sooner would the loan be paid off?

Construct the amortization schedule in numbers on Excel or spreadsheet with traceable formulas and in graph,

for each scenario. $($Your code in Excel must be made by yourself.$)$ Then, provide verbal discussions of the results. Please provide a clear cut and detailed answer for this i$\text{'}$m trying to understand each step especially the spreadsheet portion