A group of students went to a pub after the football game on Saturday night. They all ordered from the menu and forgot to tell the server to give them separate checks. The bill totaled $162 including the tip. They decided to split the bill evenly and they figured out how much each of them owed. But then three people said they had no money. The rest of the people each had to chip in 2.70 extra to cover the tab. How many people were in the group?