instruction:
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
question:
6472 # 6421 @ 7649 @ 4005
answer:
11705


question:
2611 @ 6783 @ 8407 # 5813 @ 4138
answer:
16126


question:
5525 @ 5181 @ 7886 # 8012 @ 535 @ 6955 # 6359
answer:

11711