prompt: Nancy earns $28 for working 4 hours. How many hours does she have to work to earn $70?
messages.content: Nancy earns $28 for working 4 hours. How many hours does she have to work to earn $70?
messages.role: user
messages.content: Nancy earns $28/4 = $<<28/4=7>>7 per hour.
  Therefore, she has to work $70/$7 = <<70/7=10>>10 hours to earn $70.
  #### 10
messages.role: assistant