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: 6472 # 6421 @ 7649 @ 4005

A: 11705
****
Q: 3712 @ 2339 @ 2293 # 281 @ 645 @ 102 # 8727

A:
83
****