prompt: Mike changes tires on different vehicles.  He changes all the tires on 12 motorcycles and all the tires on 10 cars.  How many tires did he change?
messages.content: Mike changes tires on different vehicles.  He changes all the tires on 12 motorcycles and all the tires on 10 cars.  How many tires did he change?
messages.role: user
messages.content: He changed 12*2=<<12*2=24>>24 motorcycle tires
  He changed 10*4=<<10*4=40>>40 car tires
  So he changed 24+40=<<24+40=64>>64 total tires
  #### 64
messages.role: assistant