1 = 0,99........

[Googolplex]

The problem is, that 1/3 is a little more than 0,3 (infinite 3), but a little less than 0,3...34.
So, the correct number is between that, but there's no wise to scribe it.
The periods are only existing between thoughts. When I say 0,9 (infinite 9) I can't calculate this number, because no calculator can handle infinite numbers, and so the end result will be wrong. The calculator will round the numbers and put put a wrong result. You can only calculate in theory, with the knowledge, infinite 9 is "equal" to 1. And 3x (1/3) is exactly 1 and not 0,9 infinite. You can't simply multiply or divide the numbers, you must know that the exact result of 1/3 is more than 0,3 infinite. And by multiplying with 3 it will not be 0,9 infinite, it will be 1 again.