Argh. I'm sick of people writing books who have no business writing books. The proper answer to that question is "I have no idea."
No problem to have an idea here...
Take a calculator (Scientific view)
Enter 2321
Switch to Hex
911
9 goes to the High byte
0x11 goes to the Low Byte
Enter 11 (In Hex) switch to decimal - 17
All problems in computer science can be solved by another level of indirection,
except for the problem of too many layers of indirection.
– David J. Wheeler