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


[Q]: 507 @ 3439 # 8086 # 5497 @ 2145 @ 2124 @ 9603 @ 2119 @ 8351
[A]: 14705


[Q]: 7702 @ 6785 @ 7363 @ 5833
[A]:
27683