Xiaoming, Xiaohong, and Xiaoli all like to read in the library. Xiaoming goes there once every 4 days, Xiaohong goes there once every 3 days, and Xiaoli goes there once every 6 days. They meet in the library on Children’s Day. How many days will it take before they meet again? ?
小明，小红，小丽都喜欢到图书馆看书，小明4天去一次，小红3天去一次，小丽6天去一次，儿童节那天他们在图书馆相遇，至少多少天以后才能再次相遇？
<gadget id="calculator">2 * 2 * 3</gadget>
<output>12</output>

<result>12</result>