The factory plans to produce 10,000 watches in 25 days, but actually produces 100 more watches per day. How many days can the task be completed in advance?
工厂计划25天生产10000支手表，实际每天多生产100支手表，可以提前几天完成任务？
<gadget id="calculator">10_000 / 25</gadget>
<output>400</output>

<gadget id="calculator">400 + 100</gadget>
<output>500</output>

<gadget id="calculator">10_000 / 500</gadget>
<output>20</output>

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

<result>5</result>