(13/12)-(5/11)-(6/11).
(13/12)-(5/11)-(6/11)．
<gadget id="calculator">13 / 12</gadget>
<output>13/12 = around 1.083333</output>

<gadget id="calculator">5 / 11</gadget>
<output>5/11 = around 0.454545</output>

<gadget id="calculator">6 / 11</gadget>
<output>6/11 = around 0.545455</output>

<gadget id="calculator">(13/12) - (5/11) - (6/11)</gadget>
<output>1/12 = around 0.083333</output>

<result>1/12 = around 0.083333</result>