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: 3407 @ 917 # 567 @ 5987 # 5936

SOLUTION: 3808

PROBLEM: 4681 # 7765 @ 9516 @ 4570 @ 2862

SOLUTION: 13864

PROBLEM: 5731 # 3254 @ 1262 @ 7583 @ 6515 # 5082

SOLUTION:
12755