For a fraction, adding 1 to the numerator equals 1, and adding 1 to the denominator equals (7/9). What is the fraction?
一个分数，分子加1就等于1，分母加1就等于(7/9)，这个分数是多少
<gadget id="calculator">7 / 8</gadget>
<output>7/8 = around 0.875</output>

<result>7/8 = around 0.875</result>