A square piece of paper with a side length of 24 cm can be made into a rectangular box without a cover by cutting off its four corners to form a small square. What is the maximum volume of this rectangular box? (neglected at joints)
一个边长为24厘米的正方形纸片，把它的四个角个剪去一个小正方形可做一个无盖的长方体盒子，这个长方体盒子的体积最大是多少？(接头处忽略不计)
<gadget id="calculator">1 + 2</gadget>
<output>3</output>

<gadget id="calculator">12 / 3</gadget>
<output>4</output>

<gadget id="calculator">2 * 4</gadget>
<output>8</output>

<gadget id="calculator">24 - 8</gadget>
<output>16</output>

<gadget id="calculator">16 ** 2</gadget>
<output>256</output>

<gadget id="calculator">256 * 4</gadget>
<output>1_024</output>

<result>1_024</result>