Baita Village plans to build a canal. If it builds 16 meters a day, it can be completed in 18 days. On the first day, 24 meters were repaired. According to the progress of the first day, how many days can it be completed?
白塔村计划修一条水渠，如果每天修16米，18天就能修完．第一天修了24米，照第一天的进度，几天能修完？
<gadget id="calculator">18 / 24</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">16 * (3/4)</gadget>
<output>12</output>

<result>12</result>