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.
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Question: 4515 - 2156 - 8427 - 2175

Answer: 17273


Question: 9491 + 8647 - 4571 + 8815 - 4816 - 8552 + 1794

Answer: 8174


Question: 4443 - 600 - 9972

Answer:
15015