(1/4) of the number A is equivalent to (1/6) of the number B. The number B is 12. What is the number A?
甲数的(1/4)相当于乙数的(1/6)，乙数是12，甲数是多少．
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/6) / (1/4)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">12 * (2/3)</gadget>
<output>8</output>

<result>8</result>