An acrobat performs a tightrope walk on a unicycle. The diameter of the wheel is 40 centimeters. To ride a 50.24-meter-long steel wire, how many revolutions does the wheel take?
杂技演员表演独轮车走钢丝，车轮的直径为40厘米，要骑50.24米长的钢丝，车轮大约要转多少周？
<gadget id="calculator">50.24 * 100</gadget>
<output>5_024</output>

<gadget id="calculator">3.14 * 40</gadget>
<output>125.6</output>

<gadget id="calculator">5_024 / 125.6</gadget>
<output>40</output>

<result>40</result>