conversations.from: human
conversations.value: Can you give me some step-by-step instructions for this math problem: A hand-crank pencil sharpener can sharpen one pencil every forty-five seconds. An electric version can sharpen one in twenty seconds. How many more pencils can the electric sharpener sharpen than the hand-crank sharpener in six minutes?
conversations.from: assistant
conversations.value: A minute is 60 seconds, so 6 minutes is 6 * 60 = 360 seconds.
  A hand-crank sharpener can sharpen 360 / 45 = 8 pencils in 6 minutes.
  An electric sharpener can sharpen 360 / 20 = 18 pencils in 6 minutes.
  Therefore, an electric sharpener can sharpen 18 - 8 = 10 more pencils than a hand-crank in 6 minutes.