1 2
77\enclose{longdiv}{924}
$ \underline{77}$
154
$ \underline{154}$
0
商是12

1. \begin{array}{r}1\ 3\\49\enclose{longdiv}{6\ 3\ 7}\\4\ 9\ \\\hline1\ 4\ 7\\1\ 4\ 7\\\hline0\end{array}
2. \begin{array}{r}3\ 8\\18\enclose{longdiv}{6\ 8\ 4}\\5\ 4\ \\\hline1\ 4\ 4\\1\ 4\ 4\\\hline0\end{array} 或 \begin{array}{r}3\ 6\\19\enclose{longdiv}{6\ 8\ 4}\\5\ 7\ \\\hline1\ 1\ 4\\1\ 1\ 4\\\hline0\end{array}