The Yangtze River is 6,300 kilometers long, which is 297 meters longer than the Nile River (9/10), the world's longest river. How many kilometers is the Nile River's total length? (solution by equation)
长江全长6300千米，比世界第一长河尼罗河的(9/10)还长297米，尼罗河全长多少千米？(用方程解)
<gadget id="calculator">6_300 - 297</gadget>
<output>6_003</output>

<gadget id="calculator">9 / 10</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">6_003 / (9/10)</gadget>
<output>6_670</output>

<result>6_670</result>