conversations.from: human
conversations.value: Can you explain how to solve this math problem: John's car needs a new engine.  The labor costs $75 an hour for 16 hours.  The part itself cost $1200.  How much did the repairs cost in total?
conversations.from: assistant
conversations.value: The labor cost 16*$75=$1200
  So the total cost was $1200+$1200=$2400