Cut a piece of rectangular paper with a length of 40 cm and a width of 32 cm into a square with the same size and as large an area as possible. If there is no paper left, how many pieces can be cut at least?
将一张长40厘米，宽32厘米的长方形纸，剪成同样大小，面积尽可能大的正方形，纸没有剩余，至少可以剪多少个？
<gadget id="calculator">2 * 2 * 2</gadget>
<output>8</output>

<gadget id="calculator">40 / 8</gadget>
<output>5</output>

<gadget id="calculator">32 / 8</gadget>
<output>4</output>

<gadget id="calculator">5 * 4</gadget>
<output>20</output>

<result>20</result>