The road repair team built a 3,600-meter-long road, which was planned to be completed in 36 days. The actual repair was 20 meters more than planned every day. How many days did it actually take?
修路队修了一条长3600米的公路，计划用36天完成，实际每天比计划多修20米，实际用了多少天修完？
<gadget id="calculator">3_600 / 36</gadget>
<output>100</output>

<gadget id="calculator">100 + 20</gadget>
<output>120</output>

<gadget id="calculator">3_600 / 120</gadget>
<output>30</output>

<result>30</result>