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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _msToString(self, ms):
 """Change milliseconds to hours min sec ms format."""

        hr, ms = divmod(ms, 3600000)
        mins, ms = divmod(ms, 60000)
        secs, mill = divmod(ms, 1000)
        return "%ihr %imin %isecs %ims" % (hr, mins, secs, mill)