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

4596 # 4475 # 6599
-6478

605 @ 9301 @ 640 # 9148 # 8015
-6617

3851 @ 9056 @ 9609 @ 5698 # 9180 @ 2364 # 33

21365