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


[Q]: 6485 @ 8165 @ 4482 # 4771 @ 2626 @ 5500 @ 8702 # 1649 @ 7002
[A]:
36542