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

523 # 5860 # 778
-6115

3970 # 8486 # 9402 # 8030 @ 4724 @ 8858
-8366

535 @ 6047 @ 9149 @ 6804 # 6864 # 6142 # 5310

4219