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: 2497 # 4988 @ 8200 # 3896 @ 5601 @ 1004

SOLUTION: 8418

PROBLEM: 4189 # 3579 @ 7275 # 5186 @ 5825 # 3209

SOLUTION: 5315

PROBLEM: 9877 @ 1257 @ 4855 # 9603 # 8010 # 784 # 990 # 6116

SOLUTION:
-9514