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: 7861 sottrazione 3910 sottrazione 9530 aggiunta 1225 sottrazione 4746
A: 
-9100