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: 6203 # 8978 # 1139 @ 240 # 4716

SOLUTION: -8390

PROBLEM: 7671 # 7716 @ 5899 @ 2520 # 497 # 24 # 16 # 840 # 9556

SOLUTION: -2559

PROBLEM: 3842 @ 2869 @ 9804 # 8714 @ 8162

SOLUTION:
15963