The tip of the minute hand of the wall clock moves exactly 50.24 cm within (1/2) hour. How long is its minute hand?
挂钟分针的针尖在(1/2)小时内，正好走了50.24厘米．它的分针长多少？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">50.24 / (1/2) / 3.14 / 2</gadget>
<output>16</output>

<result>16</result>