((9/5)+(8/3))/((4-(11/6))/(13/4)).
((9/5)+(8/3))/((4-(11/6))/(13/4))．
<gadget id="calculator">9 / 5</gadget>
<output>9/5 = around 1.8</output>

<gadget id="calculator">8 / 3</gadget>
<output>8/3 = around 2.666667</output>

<gadget id="calculator">(9/5) + (8/3)</gadget>
<output>67/15 = around 4.466667</output>

<gadget id="calculator">11 / 6</gadget>
<output>11/6 = around 1.833333</output>

<gadget id="calculator">4 - (11/6)</gadget>
<output>13/6 = around 2.166667</output>

<gadget id="calculator">13 / 4</gadget>
<output>13/4 = around 3.25</output>

<gadget id="calculator">(13/6) / (13/4)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(67/15) / (2/3)</gadget>
<output>67/10 = around 6.7</output>

<result>67/10 = around 6.7</result>