The longest river in the world, the Nile, is about 6670km long, 370km longer than the Yangtze River, the longest river in Asia. How many kilometers is the Yangtze River?
世界第一长河尼罗河全长约6670km，比亚洲第一长河长江还长370km，长江长约多少千米？
<gadget id="calculator">6_670 - 370</gadget>
<output>6_300</output>

<result>6_300</result>