(11/12) of a certain number is less (1/2) than (5/6), find this number.
某数的(11/12)比(5/6)还少(1/2)，求这个数．
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(5/6) - (1/2)</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">11 / 12</gadget>
<output>11/12 = around 0.916667</output>

<gadget id="calculator">(1/3) / (11/12)</gadget>
<output>4/11 = around 0.363636</output>

<result>4/11 = around 0.363636</result>