instruction:
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.
question:
6284 + 1234 + 9639 + 1470 + 4137 + 9445 + 5309 + 9797 - 4507
answer:
-30240


question:
6492 - 3901 + 3666 + 9196 - 3917 - 133
answer:
1581


question:
9826 - 5862 + 4973 - 7723 - 8510 + 6631 + 9611 + 1510 + 489
answer:

8707