Now you see
me, now you
don't:
9 + 1 = 10 ⇢ 1 + 0 = 1
9 + 2 = 11 ⇢ 1 + 1 = 2
9 + 3 = 12 ⇢ 1 + 2 = 3
...
9 x 2 = 18 ⇢ 1 + 8 = 9
9 x 3 = 27 ⇢ 2 + 7 = 9
9 x 4 = 36 ⇢ 3 + 6 = 9
...
In addition:
9 ⇢ 18 ⇢ 666
In addition:
9 ⇢ 18 ⇢ 666
(18 being
equivalent
to Adolf Hitler,
the 1st and the 8th
letters of the alphabet.)