prompt: Alex has some new shirts. Joe has 3 more new shirts than Alex. Ben has eight more new shirts than Joe. If Ben has 15 new shirts, how many new shirts does Alex have?
messages.content: Alex has some new shirts. Joe has 3 more new shirts than Alex. Ben has eight more new shirts than Joe. If Ben has 15 new shirts, how many new shirts does Alex have?
messages.role: user
messages.content: Joe has 15-8=<<15-8=7>>7 new shirts.
  Alex has 7-3=<<7-3=4>>4 new shirts.
  #### 4
messages.role: assistant