road has been built for 600 meters, and there are still 1,000 meters left to be repaired. How long is this road in meters? (Solution of column equation)
一条路，已经修了600米，还剩下1000米没修，这条路全长多少米？(列方程解)
<gadget id="calculator">1_000 + 600</gadget>
<output>1_600</output>

<result>1_600</result>