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: 1162 @ 622 # 7209 @ 3448

A: -1977
****
Q: 5137 @ 4207 @ 1156

A: 10500
****
Q: 9251 # 3462 @ 3841

A:
9630
****