The road repair team plans to repair 180 meters of road every day and complete the task in 30 days, but actually repairs 20 meters more than planned every day. How many days did it take to complete the task?
修路队修一条公路，计划每天修180米，30天完成任务，实际每天比计划多修20米，实际多少天就完成了任务？
<gadget id="calculator">180 + 20</gadget>
<output>200</output>

<gadget id="calculator">30 / 200</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">180 * (3/20)</gadget>
<output>27</output>

<result>27</result>