What number should be placed in the box to help complete the division calculation?

Long division setup showing an incomplete calculation. 12 is in the divisor, 6839 is in the dividend, and 5 hundreds and 6 tens is written in the quotient. 6000 is subtracted from 6839 to give 839. An unknown value represented by a box is being subtracted from 839.

Numerical Answers Expected!

Answer for Blank 1:

This didn't give me the answer

these people am i right

YOU WERE WRONG

Are you sure

this dosent help

I will give answer if I find one and if I don't find one, its not my fault ;-;

also its not 850 or any of the other numbers

I can see that...

plz I just need the answer though

ok im finding the answer it won't be long