Regex Tester & Validator

Matches an opening parenthesis followed by a literal '\x07' (bell) escape sequence and 4 or more digits, or an opening parenthesis with a literal '\t' (tab) escape, 4+ digits, and a trailing parenthesis. Captured digit groups likely represent contract amounts (주계약금액) embedded in escaped or serialized data such as logs or protocol dumps. Global and multiline flags extract every occurrence across lines.