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]: 7217 @ 2604 @ 9974 @ 8133 @ 8987 # 6381 # 7662
[A]: 22872


[Q]: 2020 @ 862 # 5780
[A]: -2898


[Q]: 1072 @ 6290 @ 6861
[A]:
14223