The diameter of the tire of the bicycle is 40cm. How many revolutions does the wheel need to ride for a distance of 125.6m?
自行车的轮胎直径为40cm，要骑125.6m长的路程，车轮要转多少周？
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">3.14 * (2/5)</gadget>
<output>1.256</output>

<gadget id="calculator">125.6 / 1.256</gadget>
<output>100</output>

<result>100</result>