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

497 # 7667 # 405 # 5403 @ 8444 @ 5031 # 1411 # 2392
-3306

8079 @ 5498 @ 5803 @ 711 # 9604 @ 7533
18020

1937 @ 2392 @ 4929 # 7956 # 6704 @ 9921 # 7994 # 4087

-7562