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]: 9720 @ 6485 @ 1745 @ 728
[A]: 18678


[Q]: 9024 # 5882 # 8531 # 9692 # 8354 @ 9065 # 1468
[A]: -15838


[Q]: 9645 @ 911 @ 6748 # 3005 # 3625 # 87 @ 3003 # 5587 # 1382
[A]:
6621