Expression: $-\frac{ 1 }{ 4 } \times \left( -\frac{ 3 }{ 5 } \right)$
Multiplying two negatives equals a positive: $\left( - \right) \times \left( - \right)=\left( + \right)$ $\frac{ 1 }{ 4 } \times \frac{ 3 }{ 5 }$
Multiply the fractions $\begin{align*}&\frac{ 3 }{ 20 } \\&0.15\end{align*}$