The tip of the minute hand of the wall clock moves exactly 25.12 cm in (1/4) hour. How long is its minute hand?
挂钟分针的针尖在(1/4)小时内，正好走了25.12厘米．它的分针长多少？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">25.12 / (1/4) / 3.14 / 2</gadget>
<output>16</output>

<result>16</result>