A rectangular iron sheet with a length of 12 cm and a width of 9 cm. It should be cut into a square with the same size and as large an area as possible, and there will be no surplus. At least how many can be cut into?
一块长12厘米，宽9厘米的长方形铁皮．要把它剪成同样大小，面积尽可能大的正方形，且没有剩余．至少可以剪成多少个？
<gadget id="calculator">2 * 2 * 3</gadget>
<output>12</output>

<result>12</result>