\( \begin{array}{c|cc} & 3 & 5 \\ - & 1 & 7 \\ \hline & 1 & 8 \end{array} \)
\( \begin{array}{c|cc} & 4 & 9 \\ + & 2 & 6 \\ \hline & 7 & 5 \end{array} \)
\( \begin{array}{c|cc} & 3 & 6 \\ + & 5 & 4 \\ \hline & 9 & 0 \end{array} \)
\( \begin{array}{c|cc} & 8 & 0 \\ - & 5 & 7 \\ \hline & 2 & 3 \end{array} \)
Ответ: 18, 75, 90, 23.