conversations.from: human
conversations.value: I need help with this problem:
  Dan spent an hour doing 400 work tasks at $0.25 each. Then Dan spent an hour doing 5 work tasks at $2.00 each. How much more did Dan make doing the good work compared to the lower-paid work?
conversations.from: assistant
conversations.value: Dan spent an hour doing 400 tasks * $.25 = $100.
  Dan spent an hour doing 5 tasks * $2.00 each = $10.00.
  Dan made $100 - $10 = $90.00 per hour more doing the higher paid work.