how do I compute Nper on my financial calculator. I newd to do the question on the calculator

Nper = ? (indicates the period) PV=50000 (indicates the half amount of loan) FV=0 (indicates the future value) Rate =8%/12 (indicates monthly rate of interest) PMT =733.76 (indicates the amount of payment) Number of Remaining Months = Nper(Rate,PMT,PV,FV) = NPER(0.08/12,733.76,-50000,0) =91.15 or 92 payments Answer is 91.15 or 92 payments Thanks