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: 8737 - 2978 - 6717

A: 18432
****
Q: 8053 - 8275 + 3672 - 7233 + 8748 - 1270 - 6997 - 7566 + 5689

A: 21285
****
Q: 4456 - 8422 - 5514 + 9784 + 5971 - 626 + 2366

A:
897
****