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: 2404 @ 4359 # 5006 # 2796 # 6139

A: -7178
****
Q: 8451 # 7523 @ 454 @ 459 @ 182 @ 6187 # 2835

A: 5375
****
Q: 8465 @ 4419 @ 3770 # 9622 @ 7712 # 7305 # 4674 @ 1853

A:
4618
****