Detailed Instructions: In this task you will be given an arithmetic operation and you have to find its answer. The symbols of operators '+' and '-' has been swapped i.e you need to perform subtraction when you see a '+' symbol and  addition in case of '-' symbol.
Problem:640 + 7414 + 3173 - 5704 + 3257 + 3878 + 6272
Solution:
-17650