prompt: John buys cans of soup for buy 1 get one free.  He gets 30 cans with a normal price of $0.60.  How much does he pay?
messages.content: John buys cans of soup for buy 1 get one free.  He gets 30 cans with a normal price of $0.60.  How much does he pay?
messages.role: user
messages.content: He pays for 30/2=<<30/2=15>>15 cans
  So he spends 15*.6=$<<15*.6=9>>9
  #### 9
messages.role: assistant