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: 5200 aggiunta 5960 aggiunta 2491 aggiunta 6582 sottrazione 9871 aggiunta 559 sottrazione 9106 aggiunta 9623 sottrazione 8213

Solution: 3225