$\frac{ 3 }{ 10 }\div\frac{ 5 }{ 6 }$
To divide by a fraction, multiply by the reciprocal of that fraction$\frac{ 3 }{ 10 } \times \frac{ 6 }{ 5 }$
To multiply the fractions, multiply the numerators and denominators separately$\frac{ 3 \times 6 }{ 10 \times 5 }$
Cancel out the common factor $2$$\frac{ 3 \times 3 }{ 5 \times 5 }$
Multiply the numbers$\frac{ 9 }{ 5 \times 5 }$
Multiply the numbers$\begin{align*}&\frac{ 9 }{ 25 } \\&\begin{array} { l }0.36,& {\left( \frac{ 3 }{ 5 } \right)}^{2}\end{array}\end{align*}$