\(\begin{array}{r} - \\ \end{array} \kern{-1.0em} \begin{array}{l}71,4 \\63 \; \darr \\ \hline \end{array} \begin{array}{|l}21 \\ \hline3 \end{array} \newline \kern{ 0.5em} \begin{array}{r} \\ \end{array} \kern{1.0em} \begin{array}{r}8 \\\end{array}\)