A fraction plus its fractional unit is equal to 1, and its fractional unit is subtracted to get (5/6). What is the original fraction.
一个分数加上它的分数单位等于1，减去它的分数单位得(5/6)，这个分数原来是多少．
<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>