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: 1566 @ 1639 # 814 # 5278 @ 1717 # 4304 # 6735 @ 1407

SOLUTION: -10802

PROBLEM: 3894 # 3818 # 2119 # 6333

SOLUTION: -8376

PROBLEM: 4967 @ 6859 # 2262 @ 3099 @ 6817 # 3822 @ 8936 @ 8633 # 6894

SOLUTION:
26333