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: 634 # 6766 # 1458 # 4376 @ 9425

SOLUTION: -2541

PROBLEM: 2806 # 6120 @ 8567 @ 1946 @ 8985 # 9834 # 368 # 454 @ 5455

SOLUTION: 10983

PROBLEM: 9531 # 9424 @ 516

SOLUTION:
623