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: 6744 aggiunta 7494 aggiunta 4846 sottrazione 235 aggiunta 739 aggiunta 4779 sottrazione 4318 sottrazione 8596 aggiunta 5693

Solution: 17146