conversations.from: human
conversations.value: Please show me the solution for: About 450 000 people lived in Maryville in 2000. In 2005, about 467 000 people lived in Maryville. What is the average number of people added each year?
conversations.from: assistant
conversations.value: The total increase of people was counted in 2005 - 2000 = 5 years.
  In 5 years, there is a total of 467 000 - 450 000 = 17 000 people increase.
  So, each year, the average number of people added is 17 000/5 = 3 400.