Teacher: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.
Teacher: Now, understand the problem? Solve this instance: 385 + 7478 + 6303 + 1723 + 7043 + 3864
Student:
-26026