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'.

3256 sottrazione 5464 sottrazione 5786
-7994

6490 sottrazione 3821 aggiunta 5972 aggiunta 9148 aggiunta 2748
20537

9969 aggiunta 9295 aggiunta 7104 sottrazione 5530

20838