Question

6+546+464+56345-654+64+3-4-64+6423-4-6463+4596-645-54394+394

Answer 1

can't you calculate 
ok sorry for being harsh
i calculate it 
6653 is the answer
by the way,why you need such a big calculation?
use abacus

Answer 2

the answer for the given question is  6613

hope so my answer is useful