For a fraction, the sum of the numerator and the denominator is 60. If 4 is subtracted from the numerator and 4 is added to the denominator, the new fraction will be (1/3) after division. What is the original fraction?
一个分数，分子与分母之和是60，如果分子减去4，分母加上4，新的分数约分后是(1/3)，原来的分数是多少．
<gadget id="calculator">60 - 4</gadget>
<output>56</output>

<gadget id="calculator">56 + 4</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 + 4</gadget>
<output>19</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 - 4</gadget>
<output>41</output>

<gadget id="calculator">19 / 41</gadget>
<output>19/41 = around 0.463415</output>

<result>19/41 = around 0.463415</result>