A fraction is divided equal to (2/11), if the sum of the numerator and denominator of the original fraction is 143, what is the original fraction.
一个分数约分后等于(2/11)，如果原分数分子与分母的和为143，原分数是多少．
<gadget id="calculator">2 + 11</gadget>
<output>13</output>

<gadget id="calculator">2 / 13</gadget>
<output>2/13 = around 0.153846</output>

<gadget id="calculator">11 / 13</gadget>
<output>11/13 = around 0.846154</output>

<gadget id="calculator">143 * (11/13)</gadget>
<output>121</output>

<gadget id="calculator">(2/13) / 121</gadget>
<output>2/1_573 = around 0.001271</output>

<gadget id="calculator">143 * (2/1_573)</gadget>
<output>2/11 = around 0.181818</output>

<result>2/11 = around 0.181818</result>