Question 849515
So we make 360 payments and we originally put down 22000 or another way to see this is:

110000*(1-.20) = 88000

Our effective rate of interest monthly is i = .105/12 = .00875

Let's let a = (1-(1+.00875)^-360) /(.00875) in more advanced circles, you'll recognize this as the PV of an annuity.  (1-v^n)/i where v is the discount factor (1/(1+i))

a = 109.32

We take 88000/109.32 = 804.98