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.

6800 + 2564 + 8444 + 1912
-6120

758 + 1664 + 5481 - 1654 - 1804 + 5232 - 9130
969

4563 + 9607 - 8291 + 8605 - 2965 - 8742 - 1182 + 155 + 3490

3886