Teacher Li bought some exercise books. These exercise books can be divided equally between 4 students and 6 students. At least how many of these exercise books are there?
李老师买一些练习本，这些练习本能平均分给4名同学，也能平均分给6名同学，这些作业本至少有多少本．
<gadget id="calculator">2 * 2 * 3</gadget>
<output>12</output>

<result>12</result>