fraction is equal to (5/8) after division. If the difference between the denominator and the numerator before division is equal to 39, what is the fraction.
一个分数约分后等于(5/8)，如果约分前分母与分子的差等于39，这个分数是多少．
<gadget id="calculator">8 - 5</gadget>
<output>3</output>

<gadget id="calculator">39 / 3</gadget>
<output>13</output>

<gadget id="calculator">8 * 13</gadget>
<output>104</output>

<gadget id="calculator">39 / 3 / 104</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">5 * (1/8)</gadget>
<output>5/8 = around 0.625</output>

<result>5/8 = around 0.625</result>