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: 634 # 6766 # 1458 # 4376 @ 9425

A: -2541
****
Q: 3556 # 1722 @ 9362 # 7616 # 7893

A: -4313
****
Q: 8099 # 538 # 2120 # 1799

A:
3642
****