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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 load_windowstime(buf, pos):
 """Load LE64 windows timestamp"""

    # unix epoch (1970) in seconds from windows epoch (1601)
    unix_epoch = 11644473600
    val1, pos = load_le32(buf, pos)
    val2, pos = load_le32(buf, pos)
    secs, n1secs = divmod((val2 << 32) | val1, 10000000)
    dt = datetime.fromtimestamp(secs - unix_epoch, UTC)
    dt = dt.replace(microsecond=n1secs // 10)
    return dt, pos