Expand the former term of the ratio to 2 times the original, and divide the latter term by (1/2), how many times the ratio will be expanded to the original
将比的前项扩大为原来的2倍，后项除以(1/2)，比值将扩大为原来的多少倍
<gadget id="calculator">2 / 1</gadget>
<output>2</output>

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

<result>4</result>