The two engineering teams originally planned to complete the 2,800-meter-long road within 14 days. In fact, the first team repaired an average of 136 meters per day, and the second team repaired an average of 144 meters per day. How many days can the task be completed in advance?
两个工程队原计划在14天内修完路2800米，实际第一队平均每天修136米，第二队平均每天修144米，这样可提前几天完成任务？
<gadget id="calculator">136 + 144</gadget>
<output>280</output>

<gadget id="calculator">2_800 / 280</gadget>
<output>10</output>

<gadget id="calculator">14 - 10</gadget>
<output>4</output>

<result>4</result>