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.

4899 + 5775 - 8386 + 4273
3237

4272 + 6013 - 9409 - 6130 + 9575 + 2198
2025

5745 + 7405 + 5407 - 8943 + 4541 - 912

-1753