((x)/4)=(6/5).
((x)/4)=(6/5)．
<gadget id="calculator">6 / 5</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(6/5) / (1/4)</gadget>
<output>24/5 = around 4.8</output>

<result>24/5 = around 4.8</result>