(2/9) of (3/5), how close is it
(2/9)的(3/5)，接近多少
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 / (1/5)</gadget>
<output>5</output>

<result>1/5 = around 0.2</result>