Interesting products for various multiplication problems. Not very useful, but certainly curious.
- 3 x 37 = 111 and 1 + 1 + 1 = 3
- 6 x 37 = 222 and 2 + 2 + 2 = 6
- 9 x 37 = 333 and 3 + 3 + 3 = 9
- 12 x 37 = 444 and 4 + 4 + 4 = 12
- 15 x 37 = 555 and 5 + 5 + 5 = 15
- 18 x 37 = 666 and 6 + 6 + 6 = 18
- 21 x 37 = 777 and 7 + 7 + 7 = 21
- 24 x 37 = 888 and 8 + 8 + 8 = 24
- 27 x 37 = 999 and 9 + 9 + 9 = 27
- 1 x 1 = 1
- 11 x 11 = 121
- 111 x 111 = 12321
- 1111 x 1111 = 1234321
- 11111 x 11111 = 123454321
- 111111 x 111111 = 12345654321
- 1111111 x 1111111 = 1234567654321
- 11111111 x 11111111 = 123456787654321
- 111111111 x 111111111=12345678987654321
- 1 x 9 + 2 = 11
- 12 x 9 + 3 = 111
- 123 x 9 + 4 = 1111
- 1234 x 9 + 5 = 11111
- 12345 x 9 + 6 = 111111
- 123456 x 9 + 7 = 1111111
- 1234567 x 9 + 8 = 11111111
- 12345678 x 9 + 9 = 111111111
- 123456789 x 9 +10 = 1111111111
- 9 x 9 + 7 = 88
- 98 x 9 + 6 = 888
- 987 x 9 + 5 = 8888
- 9876 x 9 + 4 = 88888
- 98765 x 9 + 3 = 888888
- 987654 x 9 + 2 = 8888888
- 9876543 x 9 + 1 = 88888888
- 98765432 x 9 + 0 = 888888888
- 1 x 8 + 1 = 9
- 12 x 8 + 2 = 98
- 123 x 8 + 3 = 987
- 1234 x 8 + 4 = 9876
- 12345 x 8 + 5 = 98765
- 123456 x 8 + 6 = 987654
- 1234567 x 8 + 7 = 9876543
- 12345678 x 8 + 8 = 98765432
- 123456789 x 8 + 9 = 987654321
- 7 x 7 = 49
- 67 x 67 = 4489
- 667 x 667 = 444889
- 6667 x 6667 = 44448889
- 66667 x 66667 = 4444488889
- 666667 x 666667 = 444444888889
- 6666667 x 6666667 = 44444448888889
etc.
- 4 x 4 = 16
- 34 x 34 = 1156
- 334 x 334 = 111556
- 3334 x 3334 = 11115556
- 33334 x 33334 = 1111155556
etc.
