Yongsheng Electronic Components Factory processed 15,000 electronic parts of a certain kind, and the original plan was to finish in 30 days, but the actual daily production was 250 more than the original plan. In this way, the task can be completed a few days earlier than the original plan.
永盛电子元件厂加工某种电子零件15000个，原计划30天完成，实际每天比原计划多生产250个．这样可比原计划提前多少天完成任务．
<gadget id="calculator">15_000 / 30</gadget>
<output>500</output>

<gadget id="calculator">500 + 250</gadget>
<output>750</output>

<gadget id="calculator">15_000 / 750</gadget>
<output>20</output>

<gadget id="calculator">30 - 20</gadget>
<output>10</output>

<result>10</result>