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.

Q: 8213 + 7145 + 5203 - 2621 + 1654 - 1844

A: -1324
****
Q: 8625 - 7177 + 4191

A: 11611
****
Q: 7067 + 9718 - 618 - 7315 - 2549

A:
7831
****