Students line up to visit. If every group of 4 people is just finished, if every group of 6 people is also just finished. The number of people at least how many people.
同学们排队参观．如果按每4人一组刚好排完，如果按每6人一组也刚好排完．人数至少有多少人．
<gadget id="calculator">2 * 2 * 3</gadget>
<output>12</output>

<result>12</result>