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: 6436 aggiunta 5648 sottrazione 277 sottrazione 5065 aggiunta 5461 sottrazione 1842 aggiunta 2963 sottrazione 9368 aggiunta 3121
A: 
7077