The length of a cuboid is 5 cm, the width is 3 cm, and the height is 4 cm. If the sum of the side lengths of the cuboid and a cube are equal, what is the volume of the cube in cubic centimeters?
一个长方体的长是5厘米，宽3厘米，高4厘米，长方体和一个正方体的棱长和相等，那么正方体的体积是多少立方厘米．
<gadget id="calculator">5 + 3 + 4</gadget>
<output>12</output>

<gadget id="calculator">4 / 12</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">12 * (1/3) * 12 * (1/3) * 12 * (1/3)</gadget>
<output>64</output>

<result>64</result>