There are two steel pipes with a length of 24 cm and 36 cm respectively. The two steel pipes should be cut into small sections as long as possible and equal in length (each section is a whole centimeter) and there should be no surplus. What is the longest section in centimeters?
有两根钢管，分别长24厘米和36厘米，要把这两根钢管截成尽可能长而且长度相等的小段(每段是整厘米数)而且不能有剩余，每小段最长是多少厘米？
<gadget id="calculator">2 * 2 * 3</gadget>
<output>12</output>

<result>12</result>