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: 3462 @ 9743 @ 8298

SOLUTION: 21503

PROBLEM: 643 @ 9262 # 6489 @ 1803 @ 6271

SOLUTION: 11490

PROBLEM: 7216 @ 9323 @ 1151 # 5104 @ 2265 # 243 # 2012 @ 1215 # 5670

SOLUTION:
8141