need these finance question with EXCEL FORMULAS using =PV(), =FV(), =PMT(), =RATE(), =NPER(), =IPMT(), =PPMT(), =CUMIPMT(), =CUMPRINC() etc. please read this as i need exact excel formulas please. all data is given in red on the right.

1A. Calculate the amount of interest paid in the month 72. NPER, Number of months with interest only repayments is 27months Number of years with (P&I) repayments is 10 1.8 Calculate the total amount of principal paid from the beginning of month 117 to the end of month 162. NPER, Number of months with (P&I) repayments =270 1.C Calculate the amount of the loan outstanding balance at the end of month 94. Interest rate compounded monthly=9% and interest rate per month = 0.75% Loan Amount =$921,892 1.D At the end of which month will it be for the loan outstanding balance to be less than 90% of the original loan amount for the first time? Fixed monthly repayment after the interest only period = $7,974.80