The answer depends on what string is repeating. It is not clear from the question whether the recurring fraction is meant to be 0.580580580... or 0.5808080...
0.453 repeated as a fraction = 453/999
.23 repeated as a fraction is 23/99
The number .475 repeated as a fraction would be 475/999.
If it's only the '4' that's repeated, then the fraction is 2/45 . If the '.04' is repeated, then the fraction is 4/99 .
0.3 is 3/10 as a fraction. It is NOT '1/3' 0.3333333...... repeated to infinity is 1/3
It is 1 2/3.
5/3
- 63/10
It is 1/9.
-43/99
It is 4/3
213/999