$($Components of an annuity$$ payment$)$ You take out a $30-$year mortgage for $$$$330,000$ to buy a new house. a$.$ What will your monthly payments be if the interest rate on your mortgage is $5$percent$?$ Use a spreadsheet to calculate your answer. $$b$.$ Now, calculate the portion of the $48$th monthly payment that goes toward interest and principal. Use five decimal places for the monthly interest rate in your calculations.

I solved A: it is $1771\mathrm{.}52,$ please solve b$.$