Thread:Monkey D. Luffy;Gomu Gomu No Mi/@comment-25768713-20150804195623/@comment-25768713-20150804195938

Simplified, it is:

2/3 * 5/8 * 4/7 * 1/2 * 2/5 = 80/1680 = 8/168 = 4/84 = 2/42 = 1/21