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

[Q]: 2377 @ 4500 # 8359 @ 9946 # 9011
[A]: -547


[Q]: 8041 @ 762 @ 8091 @ 6500
[A]: 23394


[Q]: 2730 # 9519 # 624 @ 8919 @ 1405 @ 5550 # 9896
[A]:
-1435