For a cuboid, the length is reduced by 4 times, the width is increased by 3 times, the height is increased by 2 times, and the volume is increased by how many times.
一个长方体，长缩小4倍，宽扩大3倍，高扩大2倍，体积扩大多少倍．
<gadget id="calculator">2 / 4</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">3 * (1/2)</gadget>
<output>3/2 = around 1.5</output>

<result>3/2 = around 1.5</result>