TASK DEFINITION: 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.
PROBLEM: 6178 - 1637 - 8197 - 6437 + 4591 - 6995 + 3562 + 9474

SOLUTION: 11817

PROBLEM: 1540 + 6977 + 9400 - 5524 - 1970 + 8397 - 6006 + 3183

SOLUTION: -12917

PROBLEM: 2131 - 1460 + 4477 + 5944 - 7254 + 1023 + 8014 + 4369 - 5062

SOLUTION:
-7920