There is a bookstore, Xiao Ming goes to it once every 4 days, and Xiao Hong goes there once every 6 days, they met in the bookstore today, how many days later will they meet again?
有一个书店，小明4天去一次，小红6天去一次，他们今天在书店相遇，几天后再次相遇？
<gadget id="calculator">2 * 3 * 2</gadget>
<output>12</output>

<result>12</result>