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: 6203 # 8978 # 1139 @ 240 # 4716

A: -8390
****
Q: 4612 @ 9447 # 3444 @ 1269

A: 11884
****
Q: 9261 # 3794 # 1229 # 1357

A:
2881
****