The farm tool factory plans to produce 400 farm tools in 25 days, but it is actually completed 5 days ahead of schedule. How many farm tools are actually produced on average per day?
农具厂计划25天生产农具400件，实际提前5天完成，实际平均每天生产农具多少件？
<gadget id="calculator">25 - 5</gadget>
<output>20</output>

<gadget id="calculator">400 / 20</gadget>
<output>20</output>

<result>20</result>