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.

8137 + 5006 - 7743 + 1478
9396

2776 - 8931 + 2788 + 8315 - 6570 + 8385 - 2789
1578

8750 + 3975 + 4022 + 5774 + 7778 + 66

-12865