A road has been repaired for 1,500 meters, which is 500 meters longer than if it has not been repaired. How long is this road in meters?
一条公路已经修好1500米，比没修好多500米，这条公路全长多少米？
<gadget id="calculator">1_500 - 500</gadget>
<output>1_000</output>

<gadget id="calculator">1_500 + 1_000</gadget>
<output>2_500</output>

<result>2_500</result>