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: 8359 sottrazione 8821 sottrazione 6303 aggiunta 5747 sottrazione 6924 sottrazione 5274 aggiunta 8956 aggiunta 9610

Solution: 5350