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

720 # 1309 @ 989 @ 1211 # 5749 # 7 @ 3147 # 9792 # 1243
-12033

636 # 9939 @ 3769 @ 8322 # 3343 @ 8680 # 1129 # 9882 # 3400
-6286

504 # 7779 # 5225 @ 4058 @ 5165 @ 3056 # 4103 # 2723

-7047