Nineteen Based Structure
Every book in existence has a mathematical structure to it. A simple, universal example would be the number of pages it contains. Going deeper, most books are further divided into chapters. Each chapter typically has a certain number of paragraphs. Each paragraph has a certain number of words. Each word has a certain number of letters. For most books, that is about how deep it gets.
Structure of the Quran
The Quran happens to be a very precisely structured book. At a high-level, the following basic structure divides the entire book: