To build a road, 360 meters were built on the first day, 120 meters in the morning on the second day, 200 meters in the afternoon, and 310 meters on the third day. How many meters are built on average per day?
修一条公路，第一天修了360米，第二天上午修了120米，下午又修了200米，第三天修了310米，平均每天修路多少米？
<gadget id="calculator">360 + 120 + 200 + 310</gadget>
<output>990</output>

<gadget id="calculator">990 / 3</gadget>
<output>330</output>

<result>330</result>