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: 7084 aggiunta 6440 sottrazione 1644 aggiunta 4974 aggiunta 2057 aggiunta 5680 aggiunta 6372
A: 
30963