To build a canal, build 125 meters on the first day, twice as much on the second day, and 80 meters less than the sum of the first two days on the third day. How many meters were built on the third day?
修一条水渠，第一天修125米，第二天修的是第一天的2倍，第三天修的比前两天的总和少80米，第三天修了多少米？
<gadget id="calculator">125 * 2</gadget>
<output>250</output>

<gadget id="calculator">250 - 80</gadget>
<output>170</output>

<gadget id="calculator">125 + 170</gadget>
<output>295</output>

<result>295</result>