conversations.from: human
conversations.value: I'm completely lost with this math problem: Tara bought 8 packs of 5 canvas bags for $4 each. She painted them and sold them at a craft fair for $8 each. How much profit did she earn on her bags?
  Can you give me a hand?
conversations.from: assistant
conversations.value: The total number of bags is 8*5 = 40
  The cost of the 40 bags is 40*4 = 160
  Tara sold the 40 bags at 8 each earning her 40*8 = 320
  Her profit was 320-160 = 160