If the former term of a ratio is enlarged by 2 times and the latter term is reduced by 4 times, how many times will the ratio be enlarged?
将一个比例的前项扩大2倍，后项缩小4倍，那么比值就扩大多少倍
<gadget id="calculator">2 * 4</gadget>
<output>8</output>

<result>8</result>