The edge length of the big cube is three times the edge length of the small cube, and the volume of the small cube is the same as that of the big cube.
大正方体的棱长是小正方体棱长的3倍，小正方体的体积是大正方体的多少．
<gadget id="calculator">3 * 3 * 3</gadget>
<output>27</output>

<gadget id="calculator">1 / 27</gadget>
<output>1/27 = around 0.037037</output>

<gadget id="calculator">1 * 1 * (1/27)</gadget>
<output>1/27 = around 0.037037</output>

<result>1/27 = around 0.037037</result>