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: 6959 aggiunta 678 sottrazione 2192 aggiunta 9412 sottrazione 8183 aggiunta 170
A: 
6844