conversations.from: human
conversations.value: Jim decides to buy mayo in bulk.  He can buy 1 gallon of mayo at Costco for 8 dollars.  At the normal store, a 16-ounce bottle costs $3.  How much money does he save by buying the gallon container?
conversations.from: assistant
conversations.value: A gallon is 1*128=128 ounces
  So he needs to buy 128/16=8 of the small bottles
  That would cost 8*3=24 dollars
  So he saves 24-8=$16