If the side length of a cube is reduced by 2 times, its volume will be reduced to its original size
一个正方体的棱长缩小2倍，它的体积就缩小到原来的多少
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/2) * (1/2) * (1/2)</gadget>
<output>1/8 = around 0.125</output>

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