(5/14)/((6/7)*((4/9)+(1/6))).
(5/14)/((6/7)*((4/9)+(1/6)))．
<gadget id="calculator">5 / 14</gadget>
<output>5/14 = around 0.357143</output>

<gadget id="calculator">6 / 7</gadget>
<output>6/7 = around 0.857143</output>

<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">(4/9) + (1/6)</gadget>
<output>11/18 = around 0.611111</output>

<gadget id="calculator">(6/7) * (11/18)</gadget>
<output>11/21 = around 0.52381</output>

<gadget id="calculator">(5/14) / (11/21)</gadget>
<output>15/22 = around 0.681818</output>

<result>15/22 = around 0.681818</result>