prompt: The total cost of Olivia’s groceries was $42. The bananas cost her $12, the bread cost her $9, and the milk cost her $7. The only other groceries she bought were apples. In dollars, how much money did the apples cost her?
messages.content: The total cost of Olivia’s groceries was $42. The bananas cost her $12, the bread cost her $9, and the milk cost her $7. The only other groceries she bought were apples. In dollars, how much money did the apples cost her?
messages.role: user
messages.content: The combined cost of the bananas, bread, and milk was 12 + 9 + 7 = $<<12+9+7=28>>28.
  The difference between this and the total is the cost of the apples, which must have therefore cost Olivia 42 – 28 = $<<42-28=14>>14.
  #### 14
messages.role: assistant