Two engineering teams, A and B, are repairing a 1200-meter road. They start work from both ends at the same time. Team A repairs 70 meters a day, and team B repairs 50 meters a day. How many days will it take to complete the road?
甲、乙两工程队修一条1200米的公路，他们从两端同时开工，甲队每天修70米，乙队每天修50米，多少天后能修完这条公路？
<gadget id="calculator">70 + 50</gadget>
<output>120</output>

<gadget id="calculator">1_200 / 120</gadget>
<output>10</output>

<result>10</result>