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: 4284 # 8233 @ 2781 # 2769 # 5560 @ 635 # 1706 @ 1965 @ 6794

A: -1809
****
Q: 8137 @ 5006 # 7743 @ 1478

A: 6878
****
Q: 8737 # 2978 # 6717

A:
-958
****