There are three wooden sticks, the lengths are 18 cm, 24 cm, and 72 cm. To cut them into small sticks of the same length, no surplus is allowed. How many centimeters can each small stick be at the longest?
有三根木棒，长分别是18厘米、24厘米、72厘米．要把它们截成同样长的小棒，不许剩余，每根小棒最长能有多少厘米？
<gadget id="calculator">2 * 3</gadget>
<output>6</output>

<result>6</result>