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: 3894 # 3818 # 2119 # 6333

SOLUTION: -8376

PROBLEM: 4331 # 7606 @ 9043 @ 9912 @ 1560 # 5858 @ 703

SOLUTION: 12085

PROBLEM: 7803 # 4853 @ 5338 # 1253 @ 3586 # 4878 @ 6843

SOLUTION:
12586