prompt: James spends 40 years teaching.  His partner has been teaching for 10 years less.  How long is their combined experience?
messages.content: James spends 40 years teaching.  His partner has been teaching for 10 years less.  How long is their combined experience?
messages.role: user
messages.content: His partner has been teaching for 40-10=<<40-10=30>>30 years
  So together they have 40+30=<<40+30=70>>70 years of experience
  #### 70
messages.role: assistant