prompt: A gym charges its members $18 twice a month.  If it has 300 members how much does it make a month?
messages.content: A gym charges its members $18 twice a month.  If it has 300 members how much does it make a month?
messages.role: user
messages.content: Each person is charged 18*2=$<<18*2=36>>36 per month
  So they get 36*300=$<<36*300=10800>>10,800 per month
  #### 10800
messages.role: assistant