0.9 recurring is equal to 1. While this seems illogical, this can be proven by saying that, if 0.3 recurring is equal to 1/3, then 1/3 x 3 = 0.9 recurring, or 1.
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1/9
Assuming you mean 0.81818181...repeating; the answer is 9/11.
It is: 88/9
23/9
*The trick with .1 repeating is it always will be divided by 9. 11.1 = 100/9