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]: 4039 # 2314 # 8257 # 5828 @ 2387 @ 4250 @ 5479 # 991
[A]: -1235


[Q]: 2994 # 4380 @ 6720
[A]: 5334


[Q]: 6600 # 5125 @ 4242 # 1385 @ 3763 @ 5300
[A]:
13395