There is a piece of rectangular glass with a length of 72 cm and a width of 40 cm. If you cut it into a square with the whole centimeters and equal area, there will be no leftovers. How many pieces can you cut?
有一块长72厘米、宽40厘米的长方形玻璃，把它裁成整厘米数、面积都相等的正方形，恰好无剩余，至少可以裁多少块？
<gadget id="calculator">2 * 2 * 2</gadget>
<output>8</output>

<gadget id="calculator">8 * 8</gadget>
<output>64</output>

<gadget id="calculator">40 / 64</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">72 * (5/8)</gadget>
<output>45</output>

<result>45</result>