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: 8798 - 6887 - 9478 - 7713 + 8512 + 7926 - 8604 + 2947 + 7573

SOLUTION: 14522

PROBLEM: 9051 - 8971 + 6555 - 1135 - 4091 + 9374 + 9487 + 1868

SOLUTION: -4036

PROBLEM: 4431 + 482 + 5285 - 1520 + 7857

SOLUTION:
-7673