Acrobats perform tightrope walking on a unicycle with a wheel diameter of 50 cm. How many revolutions does the wheel have to roll to ride a 94.2-meter steel wire?
杂技演员表演独轮车走钢丝，车轮直径50厘米．要骑过94.2米长的钢丝，车轮要滚动多少周？
<gadget id="calculator">50 / 100</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">3.14 * (1/2)</gadget>
<output>1.57</output>

<gadget id="calculator">94.2 / 1.57</gadget>
<output>60</output>

<result>60</result>