Acrobats perform tightrope walking on a unicycle with a wheel diameter of 80 cm. How many revolutions does the wheel have to roll to ride a 125.6-meter steel wire?
杂技演员表演独轮车走钢丝，车轮直径80厘米．要骑过125.6米长的钢丝，车轮要滚动多少周？
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">3.14 * (4/5)</gadget>
<output>2.512</output>

<gadget id="calculator">125.6 / 2.512</gadget>
<output>50</output>

<result>50</result>