conversations.from: human
conversations.value: There are 160 tissues inside a tissue box.   If Tucker bought 3 boxes, and used 210 tissues while he was sick with the flu, how many tissues would he have left?
conversations.from: assistant
conversations.value: When Tucker buys the tissue boxes, he has a total of 160 x 3 = 480 tissues.
  When he is sick with the flu and uses some of the tissues, he has 480 - 210 = 270 tissues left.