There are two wires, one is 8 meters long and the other is 12 meters long. If they are to be cut into small pieces of the same length without any remaining pieces, what is the longest length in meters?
有两根铁丝，一根长8米，另一根长12米．要把它们截成同样长的小段而没有剩余，每根最长是多少米．
<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<result>4</result>