The numerator of ((())/(())) is tripled, and the denominator is doubled to (12/8).
((())/(()))的分子扩大到原来的3倍，分母扩大到原来的2倍后是(12/8)．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">12 * (1/3)</gadget>
<output>4</output>

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

<result>1</result>