conversations.from: human
conversations.value: The light on a lighthouse blinks 255 times in 5 minutes. How long will it take the light to blink 459 times?
  How to solve this?
conversations.from: assistant
conversations.value: The lighthouse blinks 255 / 5 = 51 times per minute.
  It takes 459 / 51 = 9 minutes for the lighthouse to blink 459 times.