prompt: James buys 6 t-shirts for 50% off.  They each cost $20.  How much did he pay?
messages.content: James buys 6 t-shirts for 50% off.  They each cost $20.  How much did he pay?
messages.role: user
messages.content: Each shirt cost 20*.5=$<<20*.5=10>>10 with the sale
  So he paid 10*6=$<<10*6=60>>60
  #### 60
messages.role: assistant