prompt: Sam has 18 cows.  5 more than half the cows are black.  How many cows are not black?
messages.content: Sam has 18 cows.  5 more than half the cows are black.  How many cows are not black?
messages.role: user
messages.content: Half of the cows: 18/2=<<18/2=9>>9
  Black cows: 5+9=<<5+9=14>>14
  18-14=<<18-14=4>>4 cows
  #### 4
messages.role: assistant