prompt: Michael loves to paint and sells his creations. He charges $100 for a large painting and $80 for a small painting. At his last art show, he sold 5 large paintings and 8 small paintings. How much did he earn in all?
messages.content: Michael loves to paint and sells his creations. He charges $100 for a large painting and $80 for a small painting. At his last art show, he sold 5 large paintings and 8 small paintings. How much did he earn in all?
messages.role: user
messages.content: He earned 5 x $100 = $<<5*100=500>>500 for the large painting.
  And he earned 8 x $80 = $<<8*80=640>>640 for the small paintings.
  Therefore, he earned a total of $500 + $640 = $<<500+640=1140>>1140 in all.
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messages.role: assistant