The longest river in the world, the Nile, is 6,670 kilometers long, 371 kilometers longer than the Yangtze River, the longest river in Asia. How many kilometers is the Yangtze River? (solution by equation)
世界第一长河尼罗河全长6670千米，比亚洲第一长河长江还长371千米．长江长多少千米？(用方程解)
<gadget id="calculator">6_670 - 371</gadget>
<output>6_299</output>

<result>6_299</result>