1/(4/5)-(4/5)/1=how much
1/(4/5)-(4/5)/1=多少
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 / (4/5)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">(4/5) / 1</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(5/4) - (4/5)</gadget>
<output>9/20 = around 0.45</output>

<result>9/20 = around 0.45</result>