prompt: Todd has $20. He buys 4 candy bars that cost $2 each. How much money in dollars does Todd have left?
messages.content: Todd has $20. He buys 4 candy bars that cost $2 each. How much money in dollars does Todd have left?
messages.role: user
messages.content: The candy bars cost 4*2= $<<4*2=8>>8.
  Todd has 20-8= $<<20-8=12>>12 left.
  #### 12
messages.role: assistant