conversations.from: human
conversations.value: Tim buys 3 loaves of bread.  Each loaf of bread has 20 slices.  He pays for the 3 loaves of bread with 2 $20 bills.  He gets $16 change.  How much does each slice cost, in cents?
conversations.from: assistant
conversations.value: He gave 2*20=$40.
  So the total cost was 40-16=$24.
  That means each slice costs 24/3=$8.
  That means it costs 8*100=800 cents.
  So each slice is 800/20=40 cents.