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: 8901 aggiunta 2136 sottrazione 5733 sottrazione 5574 aggiunta 5108 aggiunta 3649 sottrazione 7918
A: 
569