There are two wires, one 12 meters long and the other 16 meters long. If they are to be cut into small pieces of the same length without any surplus, how many meters is the longest of each piece?
有两根铁丝，一根长12米，一根长16米．要把他们截成同样长的小段而没有剩余，每段最长是多少米？
<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<result>4</result>