The greatest common factor of the numerator and denominator of a fraction is 12, after the reduction is (4/5) what is the original fraction
一个分数的分子和分母的最大公因数是12，约分后是(4/5)这个分数原来是多少
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>