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

2678 # 5467 @ 8355 # 3124 # 5654
-3212

605 @ 9301 @ 640 # 9148 # 8015
-6617

581 # 2278 @ 452 # 5411 # 7564 @ 8148 # 2350 # 8956 # 4877

-22255