; $...$ previous code $...$

start:

; Initialize variables

ldi keySum, $0$

ldi i$,0$

; Load base addresses

ldi Z$1,$ low$($studentNumber$)$

ldi Z$1+1,$ high$($studentNumber$)$

ldi Z$2,$ low$($keyTable$)$

ldi Z$2+1,$ high$($keyTable$)$

; Loop through student number

loop:

; Load digit from studentNumber

lpm digit, Z$1$

inc Z$1$

; Calculate index $($assuming the same logic as before$)$

; $...$

; Load value from keyTable

; $...$

; Add value to keySum

; $...$

; Increment loop counter

inc i

; Check loop condition

cpi i$,7$ ; Assuming $7$ digits

brne loop

; keySum now contains the final value