+
matrix 3 3
1 2 3
4 5 6
7 8 9
matrix 3 3
10 20 30
40 50 60
70 80 90
+
matrix 2 2
1 0
0 1
matrix 2 2
0 0
1 1 
*
matrix 2 3
1 0 4
0 1 8
matrix 3 2
0 5
1 1 
2 1
*
matrix 5 4
1 2 3 4
4 5 6 1
2 3 4 5
2 2 4 5
1 2 3 4
matrix 4 6
1 2 3 4 5 6
33 2 2 3 4 4
9 9 1 2 0 1
3 12 32 21 21 21