(Components of an annuity payment) You take out a 25 -year mortgage for $300,000 to buy a new house. What will your monthly payments be if the interest rate on your mortgage is 8 percent? Use a spreadsheet to colculate your answor. Now, calculate the portion of the 48 th monthly payment that goes toward interest and principa Use five decumal piaces for the monthly interest rate in your calculations a. Using a spreadsheet to calculate yout answer, your monthly payments wil be $231545. (Round to the nearest cent) b. The portion of the seth monthly payment that goes foward interest is : (Round to the nearest cent)