The Lizhuang brigade will build 1,800 meters of canals, and it is planned to take 75 people to complete the construction in 12 days. If 15 more people are added, how many days will it be completed?
李庄大队修水渠1800米，计划用75人12天修完，如果增加15人，几天修完？
<gadget id="calculator">75 + 15</gadget>
<output>90</output>

<gadget id="calculator">1_800 / 12 / 75</gadget>
<output>2</output>

<gadget id="calculator">90 * 2</gadget>
<output>180</output>

<gadget id="calculator">1_800 / 180</gadget>
<output>10</output>

<result>10</result>