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.

306 + 2346 - 7752 + 7173
-1461

7240 - 3294 - 2859 + 1798 + 9958 - 6797
8434

7467 + 5313 + 6283 - 3478

-651