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]: 1855 # 9818 @ 3927 @ 9533 # 8557 @ 619 # 7543 # 2844
[A]: -12828


[Q]: 3615 @ 7429 @ 6810 # 207 @ 1232 # 5621 @ 6745
[A]: 20003


[Q]: 638 @ 4363 # 3987 @ 9267
[A]:
10281