code: def japanese_convert_numbers_to_words(text: str) -> str:
      res = _NUMBER_WITH_SEPARATOR_RX.sub(
          lambda m: m[0].replace(",", ""), text
      )
      res = _CURRENCY_RX.sub(
          lambda m: m[2] + _CURRENCY_MAP.get(m[1], m[1]), res
      )
      res = _NUMBER_RX.sub(lambda m: num2words(m[0], lang="ja"), res)
      return res
  
file_path: TTS/TTS/tts/utils/text/japanese/phonemizer.py
imports: import re
  import unicodedata
  from num2words import num2words
label_desc: Use image node_id 5 for calling a global function with example usage: japanese_convert_numbers_to_words(text) and returns: res