There are two colored ribbons, one is 18 meters long and the other is 12 meters long. If two colored ribbons are to be cut into short colored ribbons of the same length without any surplus, what is the longest length of each short colored ribbon in meters?
有两条彩带，一条长18米，另一条长12米．要把两条彩带剪成长度一样的短彩带而没有剩余，每条短彩带最长是多少米米．
<gadget id="calculator">2 * 3</gadget>
<output>6</output>

<result>6</result>