To build a road, it is planned to build 250 meters per day, and it can be completed in 30 days. The actual daily repair is 20% more than the plan. How many days will the actual task be completed (use the ratio to solve)
修一条公路，计划每天修250米，30天可以完成，实际每天比计划多修20%，实际多少天完成任务(用比例解)
<gadget id="calculator">250 * 30</gadget>
<output>7_500</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">250 * (1/5)</gadget>
<output>50</output>

<gadget id="calculator">250 + 50</gadget>
<output>300</output>

<gadget id="calculator">7_500 / 300</gadget>
<output>25</output>

<result>25</result>