Finding page numbers

For page size of 512 bytes:
Page 0 is addresses 0 to 511
Page 1 is addresses 512 to 1023
Page 2 is addresses 1024 to 1535
...
page number = address / page size
Using integer division
Eg: page size of 4096, address 372921
Page number = 372921 / 4096
                                = 91.045166...
                                = 91