Repeating number:

EX. 1.3333...... 

Take the non-repeating number(s) and subtract that with the unique numbers in the sequence.

EX. 13-1=12 (the 13 is all of the unique digits in the sequence, the 1 is the non-repeating number of the sequence)

To find your denominator, put a 9 for each unique digit that is repeating, then put a 0 after it for every non-repeating number remember to take out 1 of those 0s, otherwise it will not be correct.

EX.9 (there is 1 repeating number and 1 non-repeating number, so it is just a 9)

Ans. 12/9