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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 dale_chall(self, diff_count, words, sentences):
 """Calculate Dale-Chall readability score."""

        pdw = diff_count / words * 100
        asl = words / sentences
        raw = 0.1579 * (pdw) + 0.0496 * asl
        if pdw > 5:
            return raw + 3.6365
        return raw