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: 812 + 6106 - 2904 + 7738 + 7655 - 6987

SOLUTION: -10796

PROBLEM: 5856 - 8885 - 8510 + 7879 + 2100

SOLUTION: 13272

PROBLEM: 3456 - 8988 + 292 + 6473 - 42 + 5997 + 4088 - 8502 - 3621

SOLUTION:
7759