Hi there
First find the amount of the loan
107,820−107,820×0.15
=91,647
now find the monthly payment using the formula of the present value of annuity ordinary
Pmt=pv÷[(1-(1+r/k)^(-kn))÷(r/k)]
Pmt=91,647÷((1−(1+0.065÷12)^(
−12×25))÷(0.065÷12))
=618.81 ....answer
Closed to option 2
Hope it helps