[Pre-BB] MapleStory Formula Compilation

Credit to Chris from Kryptodev for this formula:

This formula determines what level your Monsterbook is:

numCardsNeeded = (5 * desiredMBLevel) * (desiredMBLevel + 1)

So if you wanted to know how many cards you needed for level 3:

numCardsNeeded = (5 * 3) * (3 + 1)
numCardsNeeded = 15 * 4
numCardsNeeded = 60