To dig a canal with a length of 440m, teams A and B start digging from both ends at the same time, team A digs 24.5m every day, and team B digs 30.5m every day. After how many days can the canal digging task be completed?
挖一条长440m的水渠，甲、乙两队同时从两头开始挖，甲队每天挖24.5m，乙队每天挖30.5m．经过多少天能完成挖渠任务？
<gadget id="calculator">24.5 + 30.5</gadget>
<output>55</output>

<gadget id="calculator">440 / 55</gadget>
<output>8</output>

<result>8</result>