Suppose f = 0.7033...
then 10f = 7.0333...
Subtracting the first from the second,
9f = 6.33
so f = 6.33/9 = 633/900 = 211/300
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The fraction for .4 repeating is 2/5.
If all 3 digits are repeating then as a fraction it is 215/999
It is: 82/99 = 0.828282.....repeating
It is: 2/15 as a fraction
The answer is 61/495