Cut a piece of rectangular paper with a length of 20 decimeters and a width of 16 decimeters 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?
把一张长20分米，宽16分米的长方形纸裁成同样大小，面积尽可能大的正方形，纸没剩余，最少可裁多少个？
<result>36</result>