conversations.from: human
conversations.value: I would love to understand how to solve this problem: Travis and his brother joined a trick-or-treat event. They collected 68 pieces of candy altogether. Each of them ate 4 pieces of candy after the event. How many pieces of candy were left?
  Can you explain?
conversations.from: assistant
conversations.value: They ate a total of 4 x 2 = 8 pieces of candy after the event.
  So, Travis and his brother have 68 - 8 = 60 pieces of candy left.