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: 531 # 4183 # 6445 # 8517 @ 4076 # 9925

SOLUTION: -24463

PROBLEM: 9786 @ 7240 # 8099 @ 100 @ 4573 @ 5982 @ 9270 @ 9911 # 8249

SOLUTION: 30514

PROBLEM: 8137 @ 5006 # 7743 @ 1478

SOLUTION:
6878