The road construction team built a road of 66 meters on the first day. The road built on the second day was three times that of the first day. The road built on the third day was 30 meters less than the total of the previous two days.
筑路队第一天筑路66米，第二天筑的路是第一天的3倍，第三天筑的比前两天的总数少30米，第三天筑路多少米？
<gadget id="calculator">3 + 1</gadget>
<output>4</output>

<gadget id="calculator">66 * 4</gadget>
<output>264</output>

<gadget id="calculator">264 - 30</gadget>
<output>234</output>

<result>234</result>