TASK DEFINITION: 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
PROBLEM: 9938 # 267 # 6696 # 8186 # 5729 # 8517 # 6331 @ 7607

SOLUTION: -18181

PROBLEM: 415 @ 1312 # 9916 @ 9168 @ 1911

SOLUTION: 2890

PROBLEM: 1887 # 377 @ 4395 # 7429

SOLUTION:
-1524