We have to divide 3/5 by 1/15. Doing so, we have:
[tex]\begin{gathered} \frac{3}{5}\div\frac{1}{15} \\ \frac{3}{5}\cdot\frac{15}{1}\text{ ( Turning the second fraction upside down and multiplying)} \\ \frac{45}{5}\text{ (Multiplying)} \\ 9\text{ (Simplifying)} \\ \text{The answer is 9} \end{gathered}[/tex]