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.

9001 + 6216 - 1478 + 5475 - 8693 - 3911 - 319 + 4768 - 320
7263

3171 - 3678 - 3096 - 5842 - 3188
18975

1998 + 3289 + 5132 + 8801

-15224