I am repeating again the solution, although I don't think there was a mistake:
0.36 (with the bar over 36) means the number under the is repeating itself, we call it a recurring decimal.
So 36 ,with a bar over 36 means: 0.3636363636....
To write any recurring decimal in a fraction, you have to multiply & divide at the same, the number with 100 , if you choose 0.36 or with 10,000 if you choose 0.3636 or with 1,000,000 if you choose 0.363636 (note that the number of Zeros equal the number of chosen decimals.
In our example let's take 0.3636 , then we multiply it by 10,000 & divide it by same: (0.3636 x 10,000) = 3636/10,000 =1,818/5,000 = 909/2500 =0.3636
If you opt to render 0.363636 into a fraction, then you have to multiple the latter number & divide it by 1,000,000
