The diameter of a bicycle wheel is 1.2 meters. How many revolutions does the wheel need to travel to travel 1.884 kilometers?
自行车车轮直径是1.2米，要行驶1.884千米，车轮需要转动多少周．
<gadget id="calculator">1.884 * 1_000</gadget>
<output>1_884</output>

<gadget id="calculator">3.14 * 1.2</gadget>
<output>3.768</output>

<gadget id="calculator">1_884 / 3.768</gadget>
<output>500</output>

<result>500</result>