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: 3526 sottrazione 4339 aggiunta 7724 aggiunta 6272 sottrazione 8098 sottrazione 9602 aggiunta 7205 aggiunta 6480

Solution: 9168