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.
--------
Question: 5856 - 8885 - 8510 + 7879 + 2100

Answer: 13272


Question: 7646 + 8509 - 4372 - 9840 - 6377 - 2924 + 869

Answer: 21781


Question: 9390 - 8471 - 8468 + 8633 + 7036 - 4081 - 6799

Answer:
21540