To find average of 5 numbers

;title:To find average of  5 numbers
;no:6483
.model small
.data
src1 db 02H,04H,06H,02H,02H
sum db 00H
avg db ?
.code
start:
mov ax,@data
mov ds,ax
mov cx,05H
lea si,src1
mov dl,05H
back: mov al,[si]
add sum,al
inc si
dec cx
jnz back
div al
mov ax,4c00h
int 21h
end start
; output
;ax=6