An acrobat performs a tightrope walk on a unicycle with a wheel diameter of 0.5m. How many revolutions does the wheel take to walk a 23.55m long steel wire?
杂技演员表演独轮车走钢丝，车轮直径是0.5m．走过23.55m长的钢丝，车轮要转动多少周？
<gadget id="calculator">3.14 * 0.5</gadget>
<output>1.57</output>

<gadget id="calculator">23.55 / 1.57</gadget>
<output>15</output>

<result>15</result>