For a simple fraction, the numerator is 6 less than the denominator, if the numerator is subtracted by 1, and the denominator is added by 5, the resulting new fraction will be reduced (2/3). Find the original score.
一个最简分数，分子比分母少6，若分子减去1，分母加上5，所得的新分数约简后(2/3)．求原分数．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(2/3) * 6</gadget>
<output>4</output>

<gadget id="calculator">(2/3) * 5</gadget>
<output>10/3 = around 3.333333</output>

<gadget id="calculator">1 + 4 + (10/3)</gadget>
<output>25/3 = around 8.333333</output>

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

<gadget id="calculator">(25/3) / (1/3)</gadget>
<output>25</output>

<gadget id="calculator">25 + 6</gadget>
<output>31</output>

<gadget id="calculator">(25/3) / (1/3) / 31</gadget>
<output>25/31 = around 0.806452</output>

<result>25/31 = around 0.806452</result>