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.

2875 - 138 + 917 + 4037 - 6642
4701

7646 + 8509 - 4372 - 9840 - 6377 - 2924 + 869
21781

5232 - 8547 - 176 - 3346 + 2407 - 6332 - 5795 + 1883

25138