20250919

\documentclass[a4paper]{article}
\usepackage{german,amsmath,amsfonts}
\begin{document}
$$m = 4,n = 4,s = 4$$$$\left(\begin{array}{ccccc}8&1&8&2&\\
5&4&8&3&\\
2&8&6&0&\\
9&2&2&7&\\
\end{array}\right)\left(\begin{array}{ccccc}5&0&8&1&\\

0&3&4&3&\\

1&6&2&2&\\

9&3&7&0&\\

\end{array}\right)
= \left(\begin{array}{ccccc}66&57&98&27&\\
60&69&93&33&\\
16&60&60&38&\\
110&39&133&19&\\

\end{array}\right)$$
\end{document}