conversations.from: human
conversations.value: I would love to understand how to solve this problem: Nathan went to the arcade. He played the air hockey game 2 times and the basketball game 4 times. If each game cost 3 tokens, how many tokens did he use?
  Can you explain?
conversations.from: assistant
conversations.value: Nathan played a total of 2 air hockey + 4 basketball = 6 games.
  This cost him 6 games x 3 tokens each = 18 tokens.