There are three bamboo poles, 12 cm, 44 cm, and 56 cm long. To cut them all into bamboo poles of the same length, no surplus is allowed. How many centimeters can each bamboo pole be at the longest?
有三根竹竿，分别长12厘米、44厘米、56厘米．要把它们都截成同样长的竹竿，不许剩余，每根竹竿最长能有多少厘米？
<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<result>4</result>