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]: 523 # 5860 # 778
[A]: -6115


[Q]: 486 # 3873 # 1187
[A]: -4574


[Q]: 4831 @ 8540 @ 2158
[A]:
15529