There are two iron wires, one is 45 cm long and the other is 60 cm long. If they are to be cut into small pieces of the same length, what is the longest length of each piece of iron wire?
有两根铁丝，一根长45厘米，另一根长60厘米，要把它们截成相同长度的小段，每段铁丝最长多少厘米？
<gadget id="calculator">3 * 5</gadget>
<output>15</output>

<result>15</result>