The length of the hour hand on the clock is 5 cm. From 8:00 am to 2:00 pm, how many centimeters does the tip of the hour hand travel?
钟表上时针长5厘米，则从上午8：00到下午2：00，时针针尖走过的路程为多少厘米
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">2 * 3.14 * 5 * (1/2)</gadget>
<output>15.7</output>

<result>15.7</result>