conversations.from: human
conversations.value: The caretaker of the docks needs to buy some new line. He wants 3 feet of line for every foot of dock. Right now, there is 200 feet of dock, and he has 6 feet of new line. How many feet of line does he need to buy in total?
  Give me a clear explanation.
conversations.from: assistant
conversations.value: 200*3 = 600 feet of line.
  The caretaker needs to buy 600-6 = 594 feet of line.