The sum of the numerator and denominator of a fraction is 92. If 16 is subtracted from both the numerator and the denominator, the ratio of the numerator to the denominator is 1:3. What is the original fraction?
一个分数的分子和分母的和是92，如果分子、分母同时减去16，分子与分母的比是1：3，原来这个分数是多少．
<gadget id="calculator">16 * 2</gadget>
<output>32</output>

<gadget id="calculator">92 - 32</gadget>
<output>60</output>

<gadget id="calculator">1 + 3</gadget>
<output>4</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">60 * (1/4)</gadget>
<output>15</output>

<gadget id="calculator">15 + 16</gadget>
<output>31</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">60 * (3/4)</gadget>
<output>45</output>

<gadget id="calculator">45 + 16</gadget>
<output>61</output>

<gadget id="calculator">31 / 61</gadget>
<output>31/61 = around 0.508197</output>

<result>31/61 = around 0.508197</result>