The tip of the minute hand on a clock face travels 31.4 cm in one circle. How long is the minute hand on this clock face?
一个钟面的分针针尖走一圈是31.4厘米，这个钟面的分针有多长？
<gadget id="calculator">31.4 / 3.14 / 2</gadget>
<output>5</output>

<result>5</result>