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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 fill(duration, point):
 """ fills the subsequence of the point with repetitions of its subsequence and sets the ``duration`` of each point. """

    point['sequence'] = point['sequence'] * (point[DURATION_64] / (8 * duration)) | add({DURATION_64: duration})
    return point