The former item of the ratio is expanded by 2 times, and the latter item is reduced to its (1/4), how many times the ratio is expanded
比的前项扩大2倍，后项缩小到它的(1/4)，比值就扩大多少倍
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">2 / (1/4)</gadget>
<output>8</output>

<result>8</result>