Given the task definition and input, reply with output. 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'.

450 sottrazione 4414 sottrazione 1649 sottrazione 4505 sottrazione 7734 sottrazione 7921 sottrazione 2810

-28583