The largest river in the world is the Amazon River in South America, with a total length of 6480 kilometers. The Yangtze River in my country is the third longest river in the world, and its total length is shorter than the Amazon River (1/36). How long is the Yangtze River in kilometers?
世界第一大河是南美洲的亚马逊河，全长6480千米．我国的长江是世界第三大河，全长比亚马逊河短(1/36)．长江全长为多少千米？
<gadget id="calculator">1 / 36</gadget>
<output>1/36 = around 0.027778</output>

<gadget id="calculator">1 - (1/36)</gadget>
<output>35/36 = around 0.972222</output>

<gadget id="calculator">6_480 * (35/36)</gadget>
<output>6_300</output>

<result>6_300</result>