Q: 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
7902 # 8518 # 4189 # 8877 @ 2105 # 8578 # 1978 @ 3285
A:
-18848