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]: 8899 # 4509 # 9411 # 7373
[A]: -12394


[Q]: 4970 @ 8711 @ 6188
[A]: 19869


[Q]: 9588 # 6542 # 1127 # 1485 @ 7483 @ 4843
[A]:
12760