The edge length of the big cube is twice that of the small cube, and the volume of the small cube is ((())/(())) of the big cube.
大正方体的棱长是小正方体的2倍，小正方体的体积是大正方体的((())/(()))．
<gadget id="calculator">2 * 2 * 2</gadget>
<output>8</output>

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">1 * 1 * (1/8)</gadget>
<output>1/8 = around 0.125</output>

<result>1/8 = around 0.125</result>