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: 5227 aggiunta 4379 sottrazione 7153 aggiunta 4607 aggiunta 7787 sottrazione 8079 sottrazione 5905 aggiunta 1710

Solution: 2573