The sum of the numerator and denominator of a fraction is 32. If 15 is added to the numerator and denominator, the ratio of the numerator to the denominator is 15:16. What is the original fraction?
一个分数的分子与分母的和是32，如果把分子、分母各加上15，则分子与分母的比是15：16，原分数是多少．
<gadget id="calculator">15 / 16</gadget>
<output>15/16 = around 0.9375</output>

<gadget id="calculator">(15/16) * 32</gadget>
<output>30</output>

<gadget id="calculator">(15/16) * 15</gadget>
<output>225/16 = around 14.0625</output>

<gadget id="calculator">(225/16) - 15</gadget>
<output>-15/16 = around -0.9375</output>

<gadget id="calculator">30 + (-15/16)</gadget>
<output>465/16 = around 29.0625</output>

<gadget id="calculator">1 + (15/16)</gadget>
<output>31/16 = around 1.9375</output>

<gadget id="calculator">(465/16) / (31/16)</gadget>
<output>15</output>

<gadget id="calculator">32 - 15</gadget>
<output>17</output>

<gadget id="calculator">(465/16) / (31/16) / 17</gadget>
<output>15/17 = around 0.882353</output>

<result>15/17 = around 0.882353</result>