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

9645 @ 911 @ 6748 # 3005 # 3625 # 87 @ 3003 # 5587 # 1382
6621

345 @ 1076 @ 7948 # 854
8515

5204 @ 455 # 8181 # 6921 @ 6062 # 9220 # 6945

-19546