In a ratio with a ratio of 3, the former term of the ratio is multiplied by 4, and the latter term is divided by 4. What is the ratio?
在比值为3的比中，比的前项乘以4，后项除以4，比值为多少．
<gadget id="calculator">4 * 4</gadget>
<output>16</output>

<gadget id="calculator">3 * 16</gadget>
<output>48</output>

<result>48</result>