Verified Answer :

the answer is 768, when doing addition it makes it way simpler to stack them on top of each other and do one at a time, so youd do 6+2 which equals 8, then youd add 3+3 which equals 6, then lastly youd add 5+2 which equals 7. when thats all together you get your answer 768 :) i hope that made sense haha

768 because 6+2=83+3=65+2=7 which equals 768