In order to support the reconstruction of the disaster-stricken area in Yushu, the worker's uncle plans to build a 6,000-meter-long road in Yushu. On the first day, 1640 meters were repaired, on the second day, the repair was twice as much as on the first day, and the rest was completed on the third day. How many meters were repaired on the third day?
为了支援玉树灾区重建，工人叔叔准备在玉树修一条长6000米的公路．第一天修了1640米，第二天修的是第一天的2倍，余下的第三天修完．第三天修了多少米？
<gadget id="calculator">1_640 * 2</gadget>
<output>3_280</output>

<gadget id="calculator">6_000 - 3_280 - 1_640</gadget>
<output>1_080</output>

<result>1_080</result>