The greatest common divisor of the numerator and denominator of a fraction is 6, which is (2/7) after reduction. What is the fraction
一个分数的分子和分母的最大公因数是6，约分后是(2/7)，这个分数是多少
<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<result>2/7 = around 0.285714</result>