A chemical fertilizer factory needs to produce 2,100 tons of fertilizers. It was originally planned to complete the task in 30 days, but actually produced 5 tons more than planned every day. How many days did it take to complete the task?
某化肥厂要生产2100吨化肥，原计划30天完成任务，实际每天比计划多生产5吨，实际几天完成任务？
<gadget id="calculator">2_100 / 30</gadget>
<output>70</output>

<gadget id="calculator">70 + 5</gadget>
<output>75</output>

<gadget id="calculator">2_100 / 75</gadget>
<output>28</output>

<result>28</result>