Given that the hour hand of a clock is 24cm long, find the distance traveled by the hour hand in a day and night.
已知某钟表的时针长24cm，求一昼夜时针所走的路程．
<gadget id="calculator">3.14 * 24 * 2 * 2</gadget>
<output>301.44</output>

<result>301.44</result>