fix the multiplcation part of this code and also display the corrrect sum when the answer is over $9$

$.$model small

$.$stack $100$h ; Define stack size

$.$data

menu$\_$msg db $13,10,"1.$ Add", $13,10,"2.$ Multiply", $13,10,"3.$ Exit", $13,10,"$$$"$

choice$\_$msg db $13,10,$ "Enter your choice: $$"$

result$\_$msg db $13,10,$ "Result: $$"$

newline db $13,10,\text{'}$$$\text{'}$

num$1$ db $?$ ; Define variables to store numbers

num$2$ db $?$

sum dw $?$ ; Word$-$sized variable to store result

error$\_$msg db $13,10,$ "Invalid choice! Please try again.", $13,10,"$$$"$

add$\_$msg db $13,10,$ "You selected addition.$$"$

multiply$\_$msg db $13,10,$ "You selected multiplication.$$"$

$.$code

main:

mov ax$,$ @data

mov ds$,$ ax

menu:

; Display the menu

mov ah$,9$

lea dx$,$ menu$\_$msg

int $21$h

; Read user's choice

mov ah$,1$

int $21$h

mov bl$,$ al

; Check the choice and execute accordingly

cmp bl$,\text{'}1\text{'}$

je add$\_$numbers

cmp bl$,\text{'}2\text{'}$

je multiply$\_$numbers

cmp bl$,\text{'}3\text{'}$

je skip$\_$display ; Jump to skip$\_$display if choice is $\text{'}3\text{'}$

; If choice is invalid, display error message and go back to menu

jmp invalid$\_$choice

skip$\_$display:

jmp exit$\_$program ; Jump to exit$\_$program if choice is $\text{'}3\text{'}$

invalid$\_$choice:

; Display error message for invalid choice

mov ah$,9$

lea dx$,$ error$\_$msg

int $21$h

jmp menu

add$\_$numbers:

; Display the selected option

mov ah$,9$

lea dx$,$ add$\_$msg

int $21$h

; Prompt for the first number

mov ah$,9$

lea dx$,$ choice$\_$msg

int $21$h

; Read the first number

mov ah$,1$

int $21$h

sub al$,\text{'}0\text{'}$

mov num$1,$ al

; Prompt for the second number

mov ah$,9$

lea dx$,$ choice$\_$msg

int $21$h

; Read the second number

mov ah$,1$

int $21$h

sub al$,\text{'}0\text{'}$

mov num$2,$ al

; Calculate the sum

mov al$,$ num$1$

add al$,$ num$2$

mov sum, ax ; Store the sum

; Display the sum

mov ah$,9$

lea dx$,$ result$\_$msg

int $21$h

; Display the sum result

mov dl$,$ al

add dl$,\text{'}0\text{'}$

mov ah$,2$

int $21$h

jmp menu

multiply$\_$numbers:

; Display the selected option

mov ah$,9$

lea dx$,$ multiply$\_$msg

int $21$h

; Prompt for the first number

mov ah$,9$

lea dx$,$ choice$\_$msg

int $21$h

; Read the first number

mov ah$,1$

int $21$h

sub al$,\text{'}0\text{'}$

mov num$1,$ al

; Prompt for the second number

mov ah$,9$

lea dx$,$ choice$\_$msg

int $21$h

; Read the second number

mov ah$,1$

int $21$h

sub al$,\text{'}0\text{'}$

mov num$2,$ al

; Multiply the numbers

mov al$,$ num$1$

mul num$2$

; Store the result in a word$-$sized variable

mov sum, ax

; Display the multiplication result

mov bx$,10$ ; To convert the result to decimal

mov cx$,0$ ; For counting digits

mov dx$,0$ ; Remainder

; Display the result

mov ah$,9$

lea dx$,$ result$\_$msg

int $21$h

; Display the high part of the result

mov ax$,$ sum

mov dx$,0$ ; Clear DX before division

div bx ; Divide AX by $10$

add dl$,\text{'}0\text{'}$ ; Convert remainder to ASCII

mov ah$,2$

int $21$h

; Display the low part of the result

mov dl$,$ al

add dl$,\text{'}0\text{'}$

mov ah$,2$

int $21$h

jmp menu

exit$\_$program:

; Exit the program

mov ah$,4$Ch

int $21$h

end main