[jhowell]

Page numbers are not a count of the number of screens of content in the book. For books that have them, and not all Kindle book do, they are meant to match the actual page numbers in one specific print edition of the same book.

Books sideloaded via calibre will typically have "fake" page numbers based on the number of characters on a typical printed page. Some people find this useful to judge the size of the book and how much they have read.

The number of characters that fit on the screen depends on your font, font size, line spacing and margins. Since a screen typically holds far less than a printed page, each page number will correspond to multiple screens of reading.

Short answer: That's just the way it works.