Simplify :

$\dfrac{6.3}{0.3 \times 0.1}$

We have:

$\dfrac{6.3}{0.03} = \dfrac{6.3 \times 100}{0.03 \times 100} = \dfrac{630}{3}$

On dividing 630 by 3, we get:

$\begin{array}{r} 210 \ 3 \overline{\smash{)} 630 } \ \underline{6} \phantom{00} \ 03 \phantom{0} \ \underline{3} \phantom{0} \ 00 \ \underline{0} \ 0 \end{array}$

Hence, the answer is 210