Basic

   1   2   3
   4   5   6
   7   8   9

   1   2   3
   0   4   5
   0   0   6

   1   0   0
   2   3   0
   4   5   6

   1   2   0
   3   4   5
   0   6   7

   1   0   0
   0   2   0
   0   0   3

Operations

   5   5
   5   5

   3   2   3   2
   2   3   2   3
   2   3   3   2
   5   2   2   5

   8   4   4   8
   8   4   4   8
   8   4   4   8
   8   4   4   8

   8   4   4   8
   8   4   4   8
   8   4   4   8
   8   4   4   8

  44  44
   0  44

  44  44
   0  44

Mixed

  10   5
   0   7

   2   0
   6  11

  12   5
   6  18

  12   5
   6  18

  24  10
  12  36

Matrix

   1   2
   3   4

   1   1   1
   0   2   2
   0   0   3

   3   0   0
   2   2   0
   1   1   1

   1   1   0
   2   2   2
   0   1   1

   5   0   0   0   0
   0   4   0   0   0
   0   0   3   0   0
   0   0   0   2   0
   0   0   0   0   1

   4   3
   2   1

Done