In a study of helicopter usage and patient​ survival, among the 58,604 patients transported by​ helicopter, 182 of them left the treatment center against medical​ advice, and the other 58,422 did not leave against medical advice. If 50 of the subjects transported by helicopter are randomly selected without​ replacement, what is the probability that none of them left the treatment center against medical​ advice? The probability is ___

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