For a simple fraction, the sum of the numerator and denominator is 86. If 9 is subtracted from both the numerator and the denominator, the resulting fraction is (8/9), what is the original fraction?
一个最简分数，分子、分母的和是86，如果分子、分母都减去9，得到的分数是(8/9)，则原分数是多少．
<gadget id="calculator">9 * 2</gadget>
<output>18</output>

<gadget id="calculator">86 - 18</gadget>
<output>68</output>

<gadget id="calculator">9 + 8</gadget>
<output>17</output>

<gadget id="calculator">9 / 17</gadget>
<output>9/17 = around 0.529412</output>

<gadget id="calculator">68 * (9/17)</gadget>
<output>36</output>

<gadget id="calculator">36 + 9</gadget>
<output>45</output>

<gadget id="calculator">86 - 45</gadget>
<output>41</output>

<gadget id="calculator">41 / 45</gadget>
<output>41/45 = around 0.911111</output>

<result>41/45 = around 0.911111</result>