Divide:

$70 ÷ 8\dfrac{2}{5}$

Solving,

$\Rightarrow 70 ÷ 8\dfrac{2}{5}\\[1em] \Rightarrow \dfrac{70}{1} ÷ \dfrac{42}{5}\\[1em] \Rightarrow \dfrac{70}{1} \times \dfrac{5}{42}\\[1em] \Rightarrow \dfrac{70}{42} \times 5 \\[1em] \Rightarrow \dfrac{5}{3} \times 5 \\[1em] \Rightarrow \dfrac{25}{3}\\[1em] \Rightarrow 8\dfrac{1}{3}.$

Hence, $70 ÷ 8\dfrac{2}{5} = 8\dfrac{1}{3}$.