Into how many chapters is the work shown by the teacher divided?

A teacher in Lucknow shows her class some pages from a long eleventh-century work on the subcontinent, written in Arabic by a scholar who lived at Ghazni. She tells them that the style is plain and easy to follow, and that the work covers a wide range of topics. One student notices that most chapters seem to follow a fixed plan, though not every chapter does. The teacher then asks the class to work out how large the work is and how its chapters are arranged.