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: 7065 # 7713 # 7473 # 664 # 8030

SOLUTION: -16815

PROBLEM: 6203 # 8978 # 1139 @ 240 # 4716

SOLUTION: -8390

PROBLEM: 9315 # 2492 @ 1235 # 2290

SOLUTION:
5768