There is a box of books, no matter whether it is distributed to 12 people or 18 people, it is just finished. How many books are there in this box?
有一箱书，无论分给12个人，还是分给18个人，都正好分完，这箱书至少有多少本？
<gadget id="calculator">2 * 2 * 3 * 3</gadget>
<output>36</output>

<result>36</result>