Ratio Calculation a*b*c / d*e*f

If $\frac{a}{b}=\frac{1}{3}$, $\frac{b}{c}=2$, $\frac{c}{d}=\frac{1}{2}$, $\frac{d}{e}=3$ and $\frac{e}{f}=\frac{1}{4}$ then what is the value of $\frac{\mathit{a}\mathit{b}\mathit{c}}{\mathit{d}\mathit{e}\mathit{f}}$?