Divide :

0.068 ÷ 0.17

We have:

$\dfrac{0.068}{0.17} = \dfrac{0.068 \times 100}{0.17 \times 100} = \dfrac{6.8}{17}$.

On dividing 6.8 by 17, we get:

$\begin{array}{r} 0.4 \ 17 \overline{\smash{)} 6.8 } \ \underline{0}\phantom{.8} \ 68 \phantom{.}\ \underline{68} \phantom{.}\ 0 \phantom{0} \end{array}$

Hence, $\dfrac{0.068}{0.17} = \dfrac{6.8}{17} = 0.4$