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: 6992 aggiunta 7858 aggiunta 5705 aggiunta 9952 aggiunta 8335 sottrazione 7278
A: 
31564