conversations.from: human
conversations.value: John buys 3 puzzles.  The first puzzle has 1000 pieces.  The second and third puzzles have the same number of pieces and each has 50% more pieces.  How many total pieces are all the puzzles?
conversations.from: assistant
conversations.value: The second puzzle has 1000*.5=500 more pieces than the first
  So it has 1000+500=1500 total pieces
  That means those two puzzles have 1500*2=3000 pieces
  So in total there were 3000+1000=4000 pieces