There is a rectangular piece of paper with a length of 48 cm and a width of 36 cm. If it is to be cut into several squares of the same size without any surplus, what is the maximum side length of the cut squares in cm?
有一张长48厘米，宽36厘米的长方形纸，如果要裁成若干同样大小的正方形而无剩余，裁成的小正方形的边长最大是多少厘米．
<gadget id="calculator">2 * 2 * 3</gadget>
<output>12</output>

<result>12</result>