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: 3683 aggiunta 9168 sottrazione 9765
Solution:
3086