Let f = 0.3636...then 100f = 36.3636...
Subtracting the first from the second gives 99f = 36
so that f = 36/99 = 4/11
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If you mean both 53 repeating then as a fraction it is 53/99
repeating decimal 1.1 as a fraction = 10/9
10/9
-303/11
0.111... repeating written as a fraction is 1/9