That depends how much of the fraction is repeating. In each case:
0.897777... = 202/225 or two hundred and two two hundred and twenty-fifths
0.8979797... = 889/990 or eight hundred and eighty-nine nine hundred and ninetieths
0.897897897... = 299/333 or two hundred and ninety-nine three hundred and thirty-thirds
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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