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: 6199 # 9863 # 8197 # 3975 @ 1000 @ 740 @ 3216 @ 2122 # 4226

SOLUTION: -12984

PROBLEM: 7211 # 614 @ 1584 # 4857 # 1495 # 1821 # 2219

SOLUTION: -2211

PROBLEM: 435 # 2203 # 832 # 1041 # 7306 # 8925

SOLUTION:
-19872