36 red balls and 24 yellow balls are of the same size and are packed in the same box respectively. When each kind of ball is just filled, what is the maximum number of balls that can be packed in each box.
36个红球与24个黄球，大小一样，分别装在同一种盒子里，每种球正好装完，每盒最多能装多少个．
<gadget id="calculator">2 * 2 * 3</gadget>
<output>12</output>

<result>12</result>