prompt: A farm has 100 chickens.  20 percent are Black Copper Marans, and 80 percent of the Black Copper Marans are hens.  How many BCM hens are there?
messages.content: A farm has 100 chickens.  20 percent are Black Copper Marans, and 80 percent of the Black Copper Marans are hens.  How many BCM hens are there?
messages.role: user
messages.content: Black Copper Marans: 100(.20)=20
  BCM Hens:20(.80)=16
  #### 16
messages.role: assistant