65015 − 8248 = 56767
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}65015\\ 8248\end{array}}\\ \begin{array}{r}\mathrm{56767 }\end{array}\end{array}$

84218 − 7134 = 77084
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}84218\\ 7134\end{array}}\\ \begin{array}{r}\mathrm{77084 }\end{array}\end{array}$

300000 − 218146 = 81854
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}300000\\ 218146\end{array}}\\ \begin{array}{r}\mathrm{81854 }\end{array}\end{array}$

1000000000 − 987654321 = 12345679
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}1000000000\\ 987654321\end{array}}\\ \begin{array}{r}\mathrm{12345679 }\end{array}\end{array}$