Shixin Watch Factory originally planned to produce 1,000 watches in 25 days, but actually produced 50 watches a day. How many days earlier than planned did the task be completed?
时新手表厂原计划25天生产1000块手表，实际每天生产了50块，实际比计划提前几天完成任务？
<gadget id="calculator">1_000 / 50</gadget>
<output>20</output>

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

<result>5</result>