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

[EX Q]: 6203 # 8978 # 1139 @ 240 # 4716
[EX A]: -8390

[EX Q]: 353 # 799 @ 4824 # 3212 @ 1811 @ 752
[EX A]: 3729

[EX Q]: 3421 # 71 @ 7643 # 8661 @ 520 # 6536 @ 9411
[EX A]:
5727