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 input: 10 sottrazione 7
Example output: 3
Example explanation: Here, 'sottrazione' represents the subtraction operation. So, the answer is 3 (10-7=3).
Q: 8379 aggiunta 8392 aggiunta 5407 aggiunta 613 aggiunta 2877 aggiunta 4830 sottrazione 1960 aggiunta 7959 aggiunta 8398
A:
44895