Digits 0–7 only—parse as base 8 (up to 22 octal digits).
Whitespace is removed, then the string must contain only digits 0–7, up to 22 characters, interpreted as a base‑8 integer (leading zeros allowed).
This calculator uses plain decimal numbers. If a result looks wrong, check whether you used a comma instead of a dot (or vice versa) where the field expects one.