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: 1284 sottrazione 4518 sottrazione 5706 aggiunta 7346 sottrazione 4135 aggiunta 3718 sottrazione 7563 aggiunta 6370 aggiunta 9607
A: 
6403