In this task you will be given an arithmetic operation and you have to find its answer. The operators '+' and '-' have been replaced with new symbols. Specifically, '+' has been replaced with the symbol '@' and '-' with the symbol '#'. You need to perform the operations in the given equation return the answer
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Question: 6543 @ 9353 @ 2169 # 4681 @ 6446

Answer: 19830


Question: 3782 @ 4127 # 1265 # 1395 @ 2430 @ 6990 @ 8573 @ 8170

Answer: 31412


Question: 6879 @ 387 @ 5118 @ 1149 @ 4126 # 7405 # 8680 # 8071

Answer:
-6497