(2/5): What is the ratio of 5.
(2/5)：5的比值是多少．
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(2/5) / 5</gadget>
<output>2/25 = around 0.08</output>

<result>2/25 = around 0.08</result>