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: 9476 aggiunta 6742 sottrazione 9346 aggiunta 5194 sottrazione 931 aggiunta 3177 sottrazione 9365 aggiunta 664 aggiunta 1229
A:
6840