Case 1: A is 3 x 3, B is 3 x 2
  A x B is 3 x 2:
    189000    283500
    225000    337500
    233000    349500
Case 2: A is 2 x 3, B is 3 x 2
  A x B is 2 x 2:
        58        64
       139       154
Case 3: A is 2 x 2, B is 2 x 2
  A x B is 2 x 2:
         2         3
         5         7
Case 4: A is 2 x 3, B is 2 x 2
  cannot multiply: A has 3 columns but B has 2 rows
