The chemical fertilizer factory plans to produce 50 tons of fertilizer per day, and after 30 days of production, it actually produces 10 tons more per day. How many days in advance can the task be completed? (Solve with ratio)
化肥厂计划每天生产化肥50吨，生产了30天，实际每天多生产10吨，这样提前几天完成任务？(用比例解)
<gadget id="calculator">50 * 30</gadget>
<output>1_500</output>

<gadget id="calculator">50 + 10</gadget>
<output>60</output>

<gadget id="calculator">1_500 / 60</gadget>
<output>25</output>

<gadget id="calculator">30 - 25</gadget>
<output>5</output>

<result>5</result>