prompt: Mark needs to replace the radiator in his car.  The work takes 2 hours and the mechanic charges $75 an hour.  The part cost $150.  How much did he pay?
messages.content: Mark needs to replace the radiator in his car.  The work takes 2 hours and the mechanic charges $75 an hour.  The part cost $150.  How much did he pay?
messages.role: user
messages.content: He had to pay for 2 hours of labor, which cost 2*$75=$<<2*75=150>>150
  So the total cost was $150+$150=$<<150+150=300>>300
  #### 300
messages.role: assistant