An electrical appliance factory originally planned to produce 3,520 washing machines in 20 days, but actually completed the task 4 days ahead of schedule. How many washing machines are actually produced every day?
一个电器厂原计划20天生产洗衣机3520台，实际提前4天完成任务，实际每天生产洗衣机多少台？
<gadget id="calculator">20 - 4</gadget>
<output>16</output>

<gadget id="calculator">3_520 / 16</gadget>
<output>220</output>

<result>220</result>