Question 932922
M = P [ i(1 + i)^n ] / [ (1 + i)^n - 1] 
P = 18,050, I = .079 per year, i(per month) = .079/12 = .00658
Need to know the 'n'  the number of payments
M = {{{18050 (.00658(1.00658)^n ) / ( (1.00658)^n - 1)}}} 
.........
For Ex: 5 years, n = 60 months
M = $365.13
........
re TY
$336000 at the finance rate of 4.9%. The Bank requires a down payment of 8% 
P then is {{{.92*336000}}} = 309,120
i = .049/12 = .004
NEED TO KNOW 'n' the number of payments. (12*years of the mortgage)
M = {{{309120(.004(1.004)^n ) / ( (1.004)^n - 1)}}} 
for ex : 30years (n = 360 payments)
M = $2268.21