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'.

1919 sottrazione 649 sottrazione 8224 sottrazione 1583 sottrazione 2142 aggiunta 2363 sottrazione 9261

-17577