The total length of the Huaihe River is about 1000 kilometers, and the total length of the Huaihe River is (2/11) that of the Yellow River, so what is the total length of the Yellow River?
淮河的全长约是1000千米，且淮河全长是黄河的(2/11)，那么黄河全长约多少．
<gadget id="calculator">2 / 11</gadget>
<output>2/11 = around 0.181818</output>

<gadget id="calculator">1_000 / (2/11)</gadget>
<output>5_500</output>

<result>5_500</result>