.model  small
    .stack  100h
    .386
    .data
a   db  1
b   db  2
c   db  9
d   db  2
e   db  5
    .code
    mov ax, @data
    mov ds, ax
    mov eax, 0 ;
    mov al, a
    ;cbw
    ;mov    bx, ax
    mov bl, b
    ;cbw
    add al, bl
    mov bl, al
    imul    al
    cbw
    imul    bx
    cwd
    mov ecx,    eax ; ecx:=a+b**3
    ;mov    al, 2
    ;cbw
    ;imul   bx
    ;mov    cx, ax
    mov al, a
    mov bl, 4
    imul    bl
    cbw
    mov bx, ax
    ;mov    bx, ax
    ;mov    ax, cx
    mov eax,    ecx
    idiv    bx
    ;cwd
    mov bl, 2
    imul    bl
    cwd
    mov ecx,    eax ;2((a+b)**3)/4a
    mov bl, c
    mov al, 2
    imul    bl
    cbw         ;c*2
    mov bx, ax
    mov al, d
    imul    al
    cbw
    sub bx, ax  ;2c-d**2
    ;mov    bx, ax
    mov al, a
    ;cbw
    imul    bx
    cwd
    mov ebx,    eax; a*(2c-d**2)
    mov dl, e
    ;cbw
    ;mov    dl, al
    mov al, 2
    ;cbw
    imul    dl
    cbw
    mov si, ax
    mov eax,    ebx
    idiv    si      ;a(2c-d**2)/2e
    ;mov    esi,    eax
    ;mov    ax, bx
    ;idiv   esi
    add ecx,    eax
    mov ax, 4c00h
    int 21h
    end