For a fraction, the sum of the numerator and denominator is 100. If 19 is added to the numerator and 31 is added to the denominator, the fraction is (2/3). What is the fraction?
一个分数，分子与分母之和是100，如果分子加上19，分母加上31，约分后是(2/3)，这个分数是多少？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(2/3) * 100</gadget>
<output>200/3 = around 66.666667</output>

<gadget id="calculator">(2/3) * 31</gadget>
<output>62/3 = around 20.666667</output>

<gadget id="calculator">(62/3) - 19</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">(200/3) + (5/3)</gadget>
<output>205/3 = around 68.333333</output>

<gadget id="calculator">1 + (2/3)</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">(205/3) / (5/3)</gadget>
<output>41</output>

<gadget id="calculator">100 - 41</gadget>
<output>59</output>

<gadget id="calculator">(205/3) / (5/3) / 59</gadget>
<output>41/59 = around 0.694915</output>

<result>41/59 = around 0.694915</result>