How to gain 140m exp in 4 hours

It pretty much is for me, considering I almost constantly have a mob to fight based on how I rotate around. Oh, and I spent 1300 ginsengs or so in those 4 hours, so roughly 400 an hour (a little more than I originally thought I used, but I was also hard-core grinding, not dodging damage).

It's a cool story, but pales in comparison to a joint venture with a bishop in the skele dungeon. Since skele only require 138? acc to hit, i can train with the exp pendant on, use bishop bless, and still 2hko everything. Another perk of the mini dungeon (For right now) is the automatic 40 speed for a half hour. I burned maybe 100-200 honsters in 3.5 hours as well.