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

[EX Q]: 4449 @ 4019 @ 7637
[EX A]: 16105

[EX Q]: 1162 @ 622 # 7209 @ 3448
[EX A]: -1977

[EX Q]: 8882 @ 3090 @ 4521 # 7369 # 3456 @ 4048 @ 515 @ 2691
[EX A]:
12922