The lengths of two iron wires are 24 cm and 36 cm respectively. If they are cut into equal pieces and there is no surplus, what is the longest length of each piece?
两根铁丝分别长24厘米、36厘米，如果把它们截成相等的小段，而且没有剩余，每小段最长是多少厘米．
<gadget id="calculator">2 * 2 * 3</gadget>
<output>12</output>

<result>12</result>