Multiply the preceding term and the following term of the ratio of (2/9) by 4, what is the ratio
把比值为(2/9)的比的前项和后项都乘4，比值是多少
<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

<result>2/9 = around 0.222222</result>