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: 7165 + 3630 + 9021 - 4140 + 319

SOLUTION: -1665

PROBLEM: 395 - 3060 - 445 + 3450 + 3365

SOLUTION: -2915

PROBLEM: 8421 + 6532 - 9804 + 6123 + 4849

SOLUTION:
721