conversations.from: human
conversations.value: Provide a step by step solution for the following math problem: There was only enough room for 21 people on a raft if no one wore life jackets. There were 7 fewer people who could fit on the raft if everyone wore life jackets. If 8 people on the raft needed life jackets, how many people could fit on the raft?
conversations.from: assistant
conversations.value: If everyone wore life jackets, only 21-7=14 people could fit on the raft.
  For every person less on the raft, 14/7=2 life jackets could fit.
  For 8 life jackets, 8/2=4 less people could fit.
  21-4=17 people could fit on the raft.