The two wires of A and B are 630 meters long. After A uses up (1/5), the two wires are the same length. How long is the original wire in meters?
甲乙两根电线共长630米，甲用去(1/5)后，两根电线一样长．甲电线原长多少米？
<gadget id="calculator">5 + 4</gadget>
<output>9</output>

<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">630 * (5/9)</gadget>
<output>350</output>

<result>350</result>