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.

3126 - 612 - 9485 - 3358 + 8070
8511

5398 + 4622 - 3983 - 2396 + 2403 - 2514
7266

7065 - 7713 - 7473 - 664 - 8030

30945