The sum of the numerator and denominator is 30. If 8 is added to the numerator, the fraction is equal to 1. What is the fraction?
一个最简真分数，分子与分母之和是30，如果分子加上8，这个分数就等于1，这个分数是多少．
<gadget id="calculator">30 - 8</gadget>
<output>22</output>

<gadget id="calculator">1 + 1</gadget>
<output>2</output>

<gadget id="calculator">22 / 2</gadget>
<output>11</output>

<gadget id="calculator">11 + 8</gadget>
<output>19</output>

<gadget id="calculator">22 / 2 / 19</gadget>
<output>11/19 = around 0.578947</output>

<result>11/19 = around 0.578947</result>