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]: 643 @ 9262 # 6489 @ 1803 @ 6271
[A]: 11490


[Q]: 126 @ 8943 @ 2476 # 7766 @ 2271 # 7213 @ 6602 # 8086 @ 2129
[A]: -518


[Q]: 9874 @ 4134 @ 322 @ 7501 # 4070 @ 2217 # 432 @ 962
[A]:
20508