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: 8929 - 6145 + 8551 - 1836 + 9159

SOLUTION: -800

PROBLEM: 2113 - 9339 + 3752 + 8710 + 3541 + 3240 + 6148 + 2019

SOLUTION: -15958

PROBLEM: 2830 + 7878 - 4709 + 3200 + 681 + 5670 + 5988 - 7626 - 8873

SOLUTION:
621