road repair team built 420 meters of roads in the first week, and 72 meters more than twice as much in the second week, and exactly the sum of the previous two weeks in the third week. How many meters were repaired in the third week?
一个修路队第一周修路420米，第二周修比第一周的2倍多72米，第三周修的正好是前两周的总和，第三周修了多少米？
<gadget id="calculator">420 * 2</gadget>
<output>840</output>

<gadget id="calculator">840 + 72 + 420</gadget>
<output>1_332</output>

<result>1_332</result>