The ratio of two numbers is 1.2. If the former term of the ratio is doubled and the latter term is reduced to the original (1/2), what is the ratio?
两个数的比值是1.2，如果比的前项扩大2倍，后项缩小到原来的(1/2)，比值是多少．
<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<gadget id="calculator">1.2 * 4</gadget>
<output>4.8</output>

<result>4.8</result>