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: 5007 @ 783 @ 3817 @ 5984 @ 7937 # 1888 @ 381 # 2641 @ 907
A: 
20287