The shape of a glass tank without a cover is square, and the sum of the lengths of the sides is 480cm. What is the minimum area of glass needed to make this fish tank?
一个无盖玻璃缸的形状是正方形，棱长总和为480cm，制作这个鱼缸至少需要多大面积的玻璃？
<gadget id="calculator">480 / 12</gadget>
<output>40</output>

<gadget id="calculator">40 * 40 * 5</gadget>
<output>8_000</output>

<result>8_000</result>