Given the task definition, example input & output, solve the new input case.
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
Output: 3
Here, 'sottrazione' represents the subtraction operation. So, the answer is 3 (10-7=3).

New input case for you: 6946 aggiunta 2650 aggiunta 3341 sottrazione 1487 aggiunta 6338 sottrazione 9231 aggiunta 1948 sottrazione 6480 sottrazione 5596
Output:
-1571