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: 4514 aggiunta 8200 aggiunta 8106 sottrazione 1880 sottrazione 2667 aggiunta 8088 sottrazione 5501 aggiunta 6763

Solution: 25623