conversations.from: human
conversations.value: Jason is tired of the neighborhood animals raiding his trash. He pepper-sprays some raccoons and 6 times as many squirrels. If he pepper-sprays 84 animals total, how many raccoons does he pepper-spray?
  Solve this problem.
conversations.from: assistant
conversations.value: Let r be the number of raccoons Jason pepper-sprays and s be the number of squirrels. We know that r + s = 84 and s = 6r.
  Substituting the second equation into the first equation, we get r + 6r = 84
  Combining like terms, we get 7r = 84
  Dividing both sides by 7, we get r = 12