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

6467 # 8145 # 9388 # 9232
-20298

6543 @ 9353 @ 2169 # 4681 @ 6446
19830

5041 # 4074 @ 1064 @ 3176

5207