I'm studying floppy drives inners, starting by 3,5" 720KB/1MB (formatted/raw) drives, and I arrived to this page: http://minuszerodegrees.net/diskette/some_floppy_maths.htm
Specifically, this part:
About MB part, I've calculated that 1MB = 1000Kb. But, what about KB part? It's 1000B or...