prompt: Mr. Doré bought $140 worth of pants, a $43 shirt and a $15 tie. He pays with a $200 bill. How much will the saleswoman give him back?
messages.content: Mr. Doré bought $140 worth of pants, a $43 shirt and a $15 tie. He pays with a $200 bill. How much will the saleswoman give him back?
messages.role: user
messages.content: The total expenses are $140 + $43 + $15 = $<<140+43+15=198>>198.
  Mr. Doré paid $200, so the saleswoman must give him $200 - $198 = $<<200-198=2>>2 back.
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messages.role: assistant