In this task you will be given an arithmetic operation and you have to find its answer. The symbols of operators '+' and '-' has been swapped i.e you need to perform subtraction when you see a '+' symbol and  addition in case of '-' symbol.

4515 - 2156 - 8427 - 2175
17273

318 - 2977 - 9352 - 3082 - 5224 + 3028 - 7022
24947

2730 - 9519 - 624 + 8919 + 1405 + 5550 - 9896

6895