Talk:Attack damage/@comment-24241164-20140814003554/@comment-24613667-20140819015643

It's added at the very end:

"117.05) × 1.4 = 1499.7081369"

Multiplying by 1.4 is the same as taking 100% of the total AD, finding 40% of it, then adding it on top of the 100% for the grand total.