Why does GCC use multiplication by a strange number in implementing integer division?

Why does GCC use multiplication by a strange number in implementing integer division?

c gcc assembly x86-64 integer-division

c

Possible GCC bug when returning struct from a function

c gcc assembly x86-64 compiler-bug

c

Ask GDB to list all functions in a program

c linux gcc gdb x86-64

c

What is the purpose of the RBP register in x86_64 assembler?

c assembly x86-64 stack-pointer

c

How to build x86 and/or x64 on Windows from command line with CMAKE?

c visual-studio cmake cross-compiling x86-64

c

Why is memcmp(a, b, 4) only sometimes optimized to a uint32 comparison?

c gcc clang x86-64 compiler-optimization

c

How to use gdb with LD_PRELOAD

c linux gcc gdb x86-64

c

Is there a 128 bit integer in gcc?

c gcc x86-64 bigint 128-bit

c

How does malloc work in a multithreaded environment?

c linux gcc malloc x86-64

c

Why does this memory address %fs:0x28 ( fs[0x28] ) have a random value?

c gcc x86-64 buffer-overflow disassembly

c

Find which assembly instruction caused an Illegal Instruction error without debugging

c linux assembly x86-64 yasm

c

How does this C program without libc work?

c assembly x86-64 system-calls abi

c

Undefined symbols for architecture x86_64 on Xcode 6.3

ios objective-c c xcode6 x86-64

c

Meaning of double underscore in the beginning

c linux gcc x86-64 glibc

c

Performance implications of context switches for 64-bit segment bases

c linux performance x86-64 cpu-registers

c