実際には転がしてないですよ？
やかましいですしね。

一応計算はしましたけど間違えてましたね。
モーターの回転数を求める問題でした！(^^;)

I didn't actually roll my pencil, okay? It would've been noisy.

I did the calculations pretty much, but I did them wrong. The problem was looking for the number of revolutions of a motor! (^^;)