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: 7944 # 4957 # 8255 @ 684

A: -4584
****
Q: 2404 @ 4359 # 5006 # 2796 # 6139

A: -7178
****
Q: 7796 @ 5912 @ 4889 # 3563 # 2189

A:
12845
****