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: 1709 # 2270 # 1077 # 9681

A: -11319
****
Q: 3938 @ 6900 @ 1254 @ 25 # 7237 # 5576 @ 8865 # 8864 @ 1349

A: 654
****
Q: 607 # 3966 @ 1483 @ 9469 @ 1635 # 8087 @ 7513 @ 6457

A:
15111
****
