Verified Answer :

\(\frac{3}{5}\ of\ 65=\frac{3}{5}\times65=\frac{3}{5}\times\frac{65}{1}=\frac{3\times ot65^{13}}{ ot5_1\times1}=\frac{3\times13}{1\times1}=\frac{39}{1}=\boxed{39}\)