An electrical appliance factory originally planned to produce 1,200 electric fans in April. Due to the prevention and control of "flu", it is not suitable to use air conditioners, so it increased the production of electric fans. The actual production in April was four times the original plan. How many more units are actually produced per day than originally planned.
一电器厂原计划四月份生产1200台电风扇，因防控"流感"不宜使用空调，而增大电风扇的生产量，四月份实际生产量是原计划的4倍．实际每天比原计划多生产多少台．
<gadget id="calculator">1_200 * 4</gadget>
<output>4_800</output>

<gadget id="calculator">4_800 - 1_200</gadget>
<output>3_600</output>

<result>3_600</result>