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]: 877 # 7761 # 7154 # 4993 # 2712
[A]: -21743


[Q]: 7686 @ 8753 @ 1402 # 3760 # 9121 @ 5705 @ 9002
[A]: 19667


[Q]: 6419 @ 8851 @ 5308
[A]:
20578