The second longest river in the world is the Amazon River in South America, with a total length of 6,500 kilometers. The Yangtze River in my country is the third longest river in the world. The total length is only 3% shorter than the Amazon River. How many kilometers is the Yangtze River?
世界第二大河是南美洲的亚马逊河，全长6500千米，我国的长江是世界第三大河，全长仅比亚马逊河短3%，长江约多少千米？
<gadget id="calculator">3 / 100</gadget>
<output>3/100 = around 0.03</output>

<gadget id="calculator">1 - (3/100)</gadget>
<output>97/100 = around 0.97</output>

<gadget id="calculator">6_500 * (97/100)</gadget>
<output>6_305</output>

<result>6_305</result>