For a cuboid whose length, width, and height are 6 decimeters, 5 decimeters, and 4 decimeters, what is the volume of a cube equal to the sum of its sides?
一个长、宽、高分别是6分米、5分米、4分米的长方体，与它棱长总和相等的正方体的体积是多少立方分米．
<gadget id="calculator">6 + 5 + 4</gadget>
<output>15</output>

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

<gadget id="calculator">15 * (1/3) * 15 * (1/3) * 15 * (1/3)</gadget>
<output>125</output>

<result>125</result>