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

531 # 4183 # 6445 # 8517 @ 4076 # 9925
-24463

5193 # 9816 # 9875 # 1011 @ 1147 @ 5023
-9339

7221 @ 968 # 4557 # 3859 # 2371 # 4621 # 7926

-15145