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: 6420 sottrazione 5747 aggiunta 7206 aggiunta 733 aggiunta 1228 sottrazione 4897 sottrazione 2680 sottrazione 6401 aggiunta 3316
A:
-822