Use PMT P(r/n) / XXXXXXXXXXr/n) -nt to determine regular pymt amt, rounded to nearest dollar. Home cost $209,000, bank requires 20% down pymt and 3pts at closing. The cost of the home is financed for...

Use PMT  P(r/n) / (1- (1+r/n)^-nt to determine regular pymt amt, rounded to nearest dollar. Home cost $209,000, bank requires 20% down pymt and 3pts at closing. The cost of the home is financed for 30-year fixed rate at 9.5%.

P=$209,000 - $41,800 = $167,200

Down Pymt= $41800

Rate= 9.5% or 0.095

Time = 30 years fixed

Points= 3 or 0.03 (167200*0.03=5106)

N=12

167200(0.095/12) = 1323.666666666667

divided by: (1-(1+0.095/12)^{-12(30) = -360}

(1-(1.007916666666667)^-360
= HOW DO I CALCULATE this, this is where I am getting stuck on the calculator. I keep getting this answer 17.09486179680438, when I do 1.007916666666667^-360

Please help me understand what I'm doing wrong on the bottom calculation.