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decoding website
https://www.base64encode.org/

how to do it in python

import base64

# Base64 encoded data
encoded_data = "base 64"

# Decode the Base64 encoded data to bytes
decoded_bytes = base64.b64decode(encoded_data)

# Convert bytes to string (assuming UTF-8 encoding)
decoded_string = decoded_bytes.decode('utf-8')

# Print the decoded string
print(decoded_string)

결론 도출:
https://www.youtube.com/@JackPark2015/videos