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: 720 # 1309 @ 989 @ 1211 # 5749 # 7 @ 3147 # 9792 # 1243

SOLUTION: -12033

PROBLEM: 415 @ 1312 # 9916 @ 9168 @ 1911

SOLUTION: 2890

PROBLEM: 3723 @ 7100 @ 3529 # 1788 @ 6612 # 8305 @ 5206 @ 8198

SOLUTION:
24275