1 2 3 4 5 6 7 8 9 10 11 12
1 1 2 3 4 5 6 7 8 9 10 11 12
2   4 6 8 10 12 14 16 18 20 22 24
3   6 9 12 15 18 21 24 27 30 33 36
4   8   16 20 24 28 32 36 40 44 48
5   10     25 30 35 40 45 50 55 60
6   12       36 42 48 54 60 66 72
7   14         49 56 63 70 77 84
8   16           64 72 80 88 96
9   18             81 90 99 108
10   20               100 110 120
11   22                 121 132
12   24                   144

Look at the table. I have filled in the blank spaces in the 2's column.
Notice that each of the next numbers, going down in the column are the same
as the number above it with 2 added to it. If you multiply 2 times 12 that
is the same as taking 12 2's and adding them all together.