A true fraction, adding one of its fractional units is 1, and subtracting one fractional unit is (5/6). What is the true fraction?
一个真分数，加上它的1个分数单位得1，减去1个分数单位得(5/6)，这个真分数是多少？
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">1 - (5/6)</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">(1/6) / 2</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">1 - (1/12)</gadget>
<output>11/12 = around 0.916667</output>

<result>11/12 = around 0.916667</result>