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]: 7803 @ 6524 @ 7077 # 1627 # 3959
[A]: 15818


[Q]: 9407 @ 4324 # 2220 # 8668 @ 1606 @ 4059
[A]: 8508


[Q]: 6809 # 1630 # 6008 # 5102 @ 9905
[A]:
3974