Divide :

142.8 ÷ 21

On dividing 142.8 by 21, we get:

$\begin{array}{r} 6.8 \ 21 \overline{\smash{)} 142.8 } \ \underline{126}\phantom{.0} \ 168 \ \underline{168} \ 0 \phantom{.} \end{array}$

Hence, 142.8 ÷ 21 = 6.8