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: 8985 @ 689 # 1015 @ 7861 # 5608 @ 7158 # 1299 @ 4685 @ 9941
A: 
31397