(5/18)/5=how much
(5/18)/5=多少
<gadget id="calculator">5 / 18</gadget>
<output>5/18 = around 0.277778</output>

<gadget id="calculator">(5/18) / 5</gadget>
<output>1/18 = around 0.055556</output>

<result>1/18 = around 0.055556</result>