An optimizing compiler will turn div-by-constant and mod-by-constant into multiplications and bitshifts. For example, the Rust compiler: https://play.rust-lang.org/?version=stable&mode=release&edit... (select "Show assembly" on the top-left button).

    pub fn divmod10(x: u32) -> (u32, u32) {
       (x / 10, x % 10)
    }

generates

    mov ecx, edi
    mov eax, 3435973837
    imul rax, rcx
    shr rax, 35
    lea ecx, [rax + rax]
    lea ecx, [rcx + 4\*rcx]
    sub edi, ecx
    mov edx, edi
    ret