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

8603 @ 6832 @ 2275 # 7856
9854

8324 # 6868 # 6537
-5081

7648 # 1897 # 6791 # 2517 @ 9169 # 9345 # 5838 # 8645

-18216