A rectangular piece of paper with a length of 6 cm and a width of 4 cm is folded to form the sides of a cuboid. What is the maximum volume of the space enclosed by the cuboid?
用一张长6厘米，宽4厘米的长方形纸片折成一个长方体的侧面，围成长方体空间的体积最大是多少立方厘米．
<gadget id="calculator">6 / 4</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">(3/2) * (3/2) * 4</gadget>
<output>9</output>

<result>9</result>