[Pre-BB] MapleStory Formula Compilation

order 1:
EXP recieved when not partied = Monster EXP * (Damage dealt / Monster HP)
(In order words, all EXP is split proportional to damage dealt.)

partyA exp = 1000 exp * (800 / 2000) = 400 exp
partyB exp = 1000 exp * (1200/2000) = 600 exp

This. Treat separate parties as unpartied characters.