82075 + (70200 − 36485) = 82075 + 33715 = 115790
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}70200\\ 36485\end{array}}\\ \begin{array}{r}33715\end{array}\end{array}$
 
$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}82075\\ 33715\end{array}}\\ \begin{array}{r}115790\end{array}\end{array}$
 
810236 − (156039 + 2849) = 810236 − 158888 = 651348
$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}156039\\ 2849\end{array}}\\ \begin{array}{r}158888\end{array}\end{array}$
 
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}810236\\ 158888\end{array}}\\ \begin{array}{r}651348\end{array}\end{array}$
 
600100 − (92016 + 117 * 8) = 600100 − (92016 + 936) = 600100 − 92952 = 507148
$\begin{array}{r}\times \underset{¯}{\begin{array}{r}117\\ 8\end{array}}\\ 936\end{array}$
 
$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}92016\\ 936\end{array}}\\ \begin{array}{r}92952\end{array}\end{array}$
 
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}600100\\ 92952\end{array}}\\ \begin{array}{r}507148\end{array}\end{array}$
 
425100 − (16950 − 654 : 6) = 425100 − (16950 − 109) = 425100 − 16841 = 408259
$\begin{array}{cc}\begin{array}{l}\underset{¯}{\phantom{0}}654\\ \phantom{0}\underset{¯}{6}\\ \phantom{0}\underset{¯}{\phantom{0}}5\\ \phantom{00}\underset{¯}{0}\\ \phantom{0}\underset{¯}{\phantom{0}}54\\ \phantom{00}\underset{¯}{54}\\ \phantom{000}0\end{array}& \begin{array}{l}\overline{)6}\\ \overline{\overline{)109}}\end{array}\end{array}$
 
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}16950\\ 109\end{array}}\\ \begin{array}{r}16841\end{array}\end{array}$
 
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}425100\\ 16841\end{array}}\\ \begin{array}{r}408259\end{array}\end{array}$