Aunt Li watered the rose and Clivia at the same time today. The rose was watered every 4 days, and the Clivia was watered every 6 days. At least how many days later, water the two kinds of flowers at the same time?
李阿姨今天给月季和君子兰同时浇了水，月季每4天浇一次水，君子兰每6天浇一次水．至少多少天后给这两种花同时浇水？
<gadget id="calculator">2 * 2 * 3</gadget>
<output>12</output>

<result>12</result>