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.

Q: 6738 - 471 + 8724

A: -1515
****
Q: 7961 - 5474 + 4234 - 4358 - 7627 - 2291 - 9771 + 9867 - 813

A: 24194
****
Q: 9130 - 4858 + 6306 - 7089 - 6152 - 3935 - 2121

A:
26979
****