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: 7825 aggiunta 413 aggiunta 7105 sottrazione 8542 sottrazione 3177
A: 
3624