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: 4787 # 6151 # 6235

SOLUTION: -7599

PROBLEM: 4130 @ 6495 # 3973

SOLUTION: 6652

PROBLEM: 6001 @ 5959 # 4272 @ 9577 @ 703 # 1249 @ 1433 @ 8542 # 5515

SOLUTION:
21179