An engineering team repaired 825 meters of roads in the first week, twice as much in the second week, and the sum of the first and second weeks in the third week. How many meters were repaired in the third week?
一个工程队第一周修公路825米，第二周修的是第一周的2倍，第三周修的是第一、二周修的总和，第三周修多少米？
<gadget id="calculator">2 + 1</gadget>
<output>3</output>

<gadget id="calculator">825 * 3</gadget>
<output>2_475</output>

<result>2_475</result>