Uncle Wang assembles electric fans. The original plan was to assemble 900 units in 25 days, but it was actually completed 5 days ahead of schedule. How many electric fans does Uncle Wang assemble on average every day?
王叔叔组装电风扇．原计划25天组装900台，实际提前5天完成．王叔叔实际平均每天组装多少台电风扇？
<gadget id="calculator">25 - 5</gadget>
<output>20</output>

<gadget id="calculator">900 / 20</gadget>
<output>45</output>

<result>45</result>