It is: 7/9
0.1717 recurring written as a fraction is 17/99
If all three digits are recurring then as a fraction it is 136/999
0.75 recurring written as a fraction is 25/33
0.9 recurring as a fraction is equal to 1. I know its crazy. But its true.
To convert a fraction to a decimal, divide the denominator into the numerator. Whether it is recurring or not depends on the fraction.
Although it is a terminating fraction, it can be written as a recurring fraction as: 0.47000000... or 0.46999999...
0.32... = 32/99 in fraction