Draw as large a square as possible on a piece of rectangular paper with a length of 25 cm and a width of 20 cm. It is required to make full use of the paper without any surplus, and each square must be the same size. How many can you draw?
在一张长25厘米、宽20厘米的长方形纸上画尽可能大的正方形，要求充分利用纸，不能有剩余，且每个正方形要同样大．你能画多少个？
<gadget id="calculator">2 * 2 * 5</gadget>
<output>20</output>

<result>20</result>