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
7953 # 7480 @ 401 # 2489 @ 8493 @ 5549 @ 6473 @ 1881
A:
20781