(7/20)/((3/4)-0.5*(20%+(1/3))).
(7/20)/((3/4)-0.5*(20%+(1/3)))．
<gadget id="calculator">7 / 20</gadget>
<output>7/20 = around 0.35</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/5) + (1/3)</gadget>
<output>8/15 = around 0.533333</output>

<gadget id="calculator">0.5 * (8/15)</gadget>
<output>0.266667</output>

<gadget id="calculator">(3/4) - 0.266667</gadget>
<output>0.483333</output>

<gadget id="calculator">(7/20) / 0.483333</gadget>
<output>0.724138</output>

<result>0.724138</result>