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: 9938 # 267 # 6696 # 8186 # 5729 # 8517 # 6331 @ 7607

SOLUTION: -18181

PROBLEM: 486 # 3873 # 1187

SOLUTION: -4574

PROBLEM: 8938 @ 421 # 7192 # 6922 # 3139 @ 1371 @ 5640 # 8202

SOLUTION:
-9085