Divide a rectangular piece of land with a length of 80 meters and a width of 60 meters into small squares of equal area. What is the maximum area of the small squares?
将一块长80米、宽60米的长方形土地划分成面积相等的小正方形，小正方形的面积最大是多少？
<gadget id="calculator">2 * 2 * 5</gadget>
<output>20</output>

<gadget id="calculator">20 * 20</gadget>
<output>400</output>

<result>400</result>