(x+4)/5=6．
(x+4)/5=6．
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">6 - (4/5)</gadget>
<output>26/5 = around 5.2</output>

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

<gadget id="calculator">(26/5) / (1/5)</gadget>
<output>26</output>

<result>26</result>