To convert a decimal value into a fraction, move the decimal point to the rightmost position through multiplication by 10 for each position. Keep track of how many times you multiply by 10, and then divide by 10 the same amount.
7.23 = 7.23 x 10 x 10 / (10 x 10) = 723/100
You can now consider if there are any common factors that could be removed to simplify the fraction.
For your example, 723 = 3 x 241; and 100 = 2 x 5 x 2 x 5.
Since this has no common factors, the fraction can not be simplified further, and
the answer is 7.23 = 723/100
723/100
7.23 = 723/100 in fraction
723/100
0.723 = 723/1000
723/1000
51.6429
21.2647
0.723 = 723/1000 which cannot be simplified further.
It is not an irrational number, and can be represented by the fraction: 4 669 723 / 14 442 889
The answer depends on what you want to turn into a fraction. And, incidentally, I do not turn into a fraction.
The factors of 723 are: 1, 3, 241, 723.
How to turn 0.625 into a fraction