(long sentences) leads to a higher FRS, suggesting the text is intended for more advanced readers.

The primary purpose of this coefficient is to ensure that longer, more complex sentences increase the FRS, indicating lower readability (higher difficulty). A high value for

Based on your request, "1579x" appears in the context of a calculation used in readability assessment. Specifically, this is part of the Dale-Chall Formula for readability, which is used to analyze the difficulty of a text.