conversations.from: human
conversations.value: Jon's laundry machine can do 5 pounds of laundry at a time.  4 shirts weigh 1 pound and 2 pairs of pants weigh 1 pound.  If he needs to wash 20 shirts and 20 pants, how many loads of laundry does he have to do?
conversations.from: assistant
conversations.value: The shirts weigh 20/4=5 pounds
  The pants weigh 20/2=10 pounds
  So he needs to do 10+5=15 pounds of laundry
  So that would take 15/5=3 loads of laundry