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: 7640 @ 3347 @ 904

A: 11891
****
Q: 2065 @ 3769 @ 9915 # 6270 @ 3929 @ 5328 @ 6079 @ 5250 @ 843

A: 30908
****
Q: 5474 @ 2497 @ 6991 @ 302 # 1963 # 6932 # 5953 # 4859

A:
-4443
****