(7/11)/9+(1/9)*(4/11).
(7/11)/9+(1/9)*(4/11)．
<gadget id="calculator">7 / 11</gadget>
<output>7/11 = around 0.636364</output>

<gadget id="calculator">(7/11) / 9</gadget>
<output>7/99 = around 0.070707</output>

<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">4 / 11</gadget>
<output>4/11 = around 0.363636</output>

<gadget id="calculator">(1/9) * (4/11)</gadget>
<output>4/99 = around 0.040404</output>

<gadget id="calculator">(7/99) + (4/99)</gadget>
<output>1/9 = around 0.111111</output>

<result>1/9 = around 0.111111</result>