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: 9487 # 9520 @ 4047

A: 4014
****
Q: 2560 @ 144 @ 6785 @ 572 # 5190 @ 1929

A: 6800
****
Q: 798 # 4907 @ 2923 # 7817 @ 1496

A:
-7507
****