. 486 
.model flat, stdcall
option casemap :none
.data
x                 db  5 
y                 db  10 
z                 db  10 
u                 dw  100 
v                 dw  100 
w                db  50 
result                 dd ?

.code
start:
mov al, w	;al=w
mul al	;ax=al*al=w^ 2 
push ax	;ax->steck
mov al, x	;al=x
mul y	;ax=x*y
push ax	;ax->steck
mov ax, u	;ax=u
 div  x		;ax=u/x
mov bp, sp;адресс начала стека в bp
add ax, [ebp];ax=u/x+x*y
add ax,[ebp+ 2 ];ax=u/x+x*y+w^ 2 
mov bx, [ebp];bx=xy 
cwd		; ax->dx:ax
 div  bx	;ax=(u/x+x*y+w^ 2 )/(xy)
 div  z		;ax=(u/x+x*y+w^ 2 )/(xyz)
push dx	;dx->steck
push ax	;ax->steck

mov al, x	;al=x
mul x	;ax=al*al=x^ 2 
 shl  ax,  1 	;ax=2x^ 2 
mov bx, ax;bx=ax
mov ax, u	;ax=u
mov cx,  3 
mul cx	;ax=3u
add ax, bx;ax=3u+2x^ 2 
mov cx,  8 
sub ax, cx	;ax=3u+2x^ 2 - 8 
mov bx, ax;bx=ax
mov ax, u	;ax=u
mul v	;ax=uv
add al, w	;ax=uv+w
cdq
 div  bx	;ax=(uv+w)/(3u+2x^ 2 - 8 )
pop ebx	;bx=(u/x+x*y+w^ 2 )/(xyz)
add eax, ebx;ax=(uv+w)/(3u+2x^ 2 - 8 )+(u/x+x*y+w^ 2 )/(xyz)
cwde
mov result, eax
ret
 end  start