How much soup is needed for 50 people?

ALOT i mean one cup is good for one person but if your talking about FIVE well that's just pretty much FIVE cups and if you ask me not many people will want this answer but its kinda interesting for potluck dinners and grandparents possible even moms and dads! i mean another good thing to think about is if the five people are going to have seconds or not! then your probably talking bout making a whole pot roast pan or dish or whatever you want to call it.Anyway if people DO read this answer to this silly question i hope you enjoy it!! and make some soup "Its good for ya!!"