Science

Not in a practical sense, because we can never actually do anything an infinite number of times -- such as writing a 9 an infinite number of times.

As a concept, however, they're the same.

Just like 1/3 = 0.333333...

Pi equals 3.14159... -- with decimals that never infinitely repeat since it's an irrational number that can't be expressed as a fraction. (Pi is also the sum of a converging infinite series.)

If the decimals infinitely repeat, the corresponding fraction equals the repeating numbers divided by 10 to the power of the number of repeating numbers minus 1 -- e.g., 0.3 (repeating) = 3/(10-1) = 3/9 = 1/3.

And 0.127 (infinitely repeating thereafter) = 127/(1000-1) = 127/999.

If the decimal value is instead 0.38127 (with 127 repeating thereafter), it equals 38/100 + (127/999)/100 = [38x999 + 127]/99900 = 38089/99900.