conversations.from: human
conversations.value: A crocodile grows 8 inches long in 4 years. At this rate, how many inches will it grow in 13 years?
  Work out the solution step by step.
conversations.from: assistant
conversations.value: Crocodile grows 8/4 = 2 inches a year.
  Crocodile grows 13*2 = 26 inches in 13 years.