The washing machine factory needs to produce 360 washing machines, which was originally planned to be completed in 30 days; the actual production is 6 more than the original plan every day, and the task is actually completed a few days earlier?
洗衣机厂要生产360台洗衣机，原计划30天完成；实际每天比原计划多生产6台，实际提前几天完成任务？
<gadget id="calculator">360 / 30</gadget>
<output>12</output>

<gadget id="calculator">12 + 6</gadget>
<output>18</output>

<gadget id="calculator">360 / 18</gadget>
<output>20</output>

<gadget id="calculator">30 - 20</gadget>
<output>10</output>

<result>10</result>