Given the task definition and input, reply with output. In this task you will be given an arithmetic operation in Italian and you have to find its answer. The operations 'addition' and 'subtraction' have been replaced with their italian translations i.e you need to perform addition when you see 'aggiunta' and subtraction in case of 'sottrazione'.

1446 aggiunta 1343 aggiunta 2440 aggiunta 4999 sottrazione 8996 aggiunta 9675 aggiunta 6660 sottrazione 8790 aggiunta 8957

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
17734