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: 7671 aggiunta 731 sottrazione 3160 aggiunta 5509 aggiunta 5448 sottrazione 9886 sottrazione 2234 aggiunta 5393 sottrazione 9626

Solution: -154