The transport team originally planned to transport 1,000 tons of goods in 25 days, but actually transported 50 tons per day. How many days earlier than planned was the actual delivery?
运输队原计划25天运货1000吨，实际每天运货50吨．实际比计划提前几天运完？
<gadget id="calculator">1_000 / 50</gadget>
<output>20</output>

<gadget id="calculator">25 - 20</gadget>
<output>5</output>

<result>5</result>