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]: 6543 @ 9353 @ 2169 # 4681 @ 6446
[A]: 19830


[Q]: 4285 @ 7480 @ 866 # 5490 # 7452 # 3814 @ 1045 @ 38
[A]:
-3042