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'.
Q: 958 aggiunta 4766 sottrazione 9988 sottrazione 5295 aggiunta 3809
A: 
-5750