There are three sections of iron wire, 48 meters, 68 meters and 36 meters in length respectively. They must be cut into small sections of the same length, and no surplus is allowed. How many meters is the longest of each section?
有三段铁丝，分别长48米、68米和36米，要把它们截成同样长的小段，不许剩余，每段最长多少米．
<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<result>4</result>