Grouping of binary numbers
 
 
- Given a lot of 32-bit numbers (0000...0000 to 1111...1111)
- 
- Can have 2^0 (1) groups of  2^32 numbers
- Can have 2^8 (256) groups of 2^24 numbers
- Can have 2^25 groups of 2^7 numbers
 
- Consider one group of 2^7 (128) numbers
- 
- e.g.  1101000110100011011010010xxxxxxx
 
- Can divide it into 2^1 (2) groups of 2^6 (64)
- Can divide it into 2^3 (8) groups of 2^4 (16)
- etc