How do you divide 3 rational expressions?

$\frac{a}{b} \div i \mathrm{de} \frac{c}{d} \div i \mathrm{de} \frac{e}{f} = \frac{a}{b} \times \frac{d}{c} \times \frac{f}{e} = \frac{a \cdot d \cdot f}{b \cdot c \cdot e}$