Two engineering teams, A and B, repair a road. Team A repairs 35 meters per day, and Team B repairs 42 meters per day. After Team A repaired for 2 days, Team B joined. Team A and Team B worked together to build the road for 5 days and completed the task. How long is this road in meters?
甲、乙两个工程队修一条公路，甲队每天修35米，乙队每天修42米．甲队修了2天后，乙队才加入，甲、乙两队共同修路用了5天，完成了任务．这条公路全长多少米？
<gadget id="calculator">2 + 5</gadget>
<output>7</output>

<gadget id="calculator">7 * 35</gadget>
<output>245</output>

<gadget id="calculator">5 * 42</gadget>
<output>210</output>

<gadget id="calculator">245 + 210</gadget>
<output>455</output>

<result>455</result>