conversations.from: human
conversations.value: John reels in 3 crab baskets a week.  Each basket holds 4 crabs.  He collects crabs twice a week.  Each crab sells for $3.  How much money does he make?
conversations.from: assistant
conversations.value: He collects 3*4=12 crabs each time.
  He thus collects 12*2=24 crabs a week.
  So he makes 24*3=$72 a week.