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'.
Example: 10 sottrazione 7
Example solution: 3
Example explanation: Here, 'sottrazione' represents the subtraction operation. So, the answer is 3 (10-7=3).

Problem: 6734 aggiunta 8029 aggiunta 9788 sottrazione 2455 aggiunta 2358 aggiunta 5634 aggiunta 6024 aggiunta 4112 sottrazione 6971

Solution: 33253