20%X+32=36．
20%X+32=36．
<gadget id="calculator">36 - 32</gadget>
<output>4</output>

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

<gadget id="calculator">4 / (1/5)</gadget>
<output>20</output>

<result>20</result>