Write down the common multiples of 6 and 9 within 100, and then think about the relationship between these common multiples and their least common multiples?
写出100以内6和9的公倍数，再想一想这些公倍数和它们的最小公倍数之间是什么关系？
<gadget id="calculator">2 * 3 * 3</gadget>
<output>18</output>

<result>18</result>