If the former item of the ratio is expanded to 3 times of it, and the latter item is reduced to (1/4) of it, then the ratio is expanded to how many times it is
比的前项扩大到它的3倍，后项缩小到它的(1/4)，则比值就扩大到它的多少倍
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">3 / (1/4)</gadget>
<output>12</output>

<result>12</result>