Answer
$1673.2
Work Step by Step
We are given $P=55000, i=\frac{0.06}{12}=0.005, n=36$
the formula is $P=R[\frac{1-(1+i)^{-n}}{i}]$
so $\rightarrow R=\frac{P}{[\frac{1-(1+i)^{-n}}{i}]}$
$=\frac{55000}{[\frac{1-(1+0.005)^{-36}}{0.005}]}\approx \$1673.2$