For a fraction, the sum of the numerator and the denominator is 30. If the numerator is increased by 8, the fraction is equal to 1. What is this score?
一个分数，分子、分母的和是30，若分子增加8，这个分数就等于1．这个分数是多少？
<gadget id="calculator">8 + 30</gadget>
<output>38</output>

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

<gadget id="calculator">38 / 2</gadget>
<output>19</output>

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

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

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