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: 1077 @ 2451 @ 9445 @ 1297 @ 2639 # 27 # 9331 @ 8713

A: 16264
****
Q: 1559 # 9981 # 6881

A: -15303
****
Q: 4372 # 4180 # 4542 @ 5154 # 7987

A:
-7183
****