You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
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'.

10 sottrazione 7
Solution: 3
Why? Here, 'sottrazione' represents the subtraction operation. So, the answer is 3 (10-7=3).

New input: 3247 sottrazione 761 sottrazione 2425 aggiunta 4546 aggiunta 6554 sottrazione 1419 aggiunta 9337 sottrazione 5146
Solution:
13933