Plz help me before I’m known as a failure in my family And I know some people say that just to get attention but I’m not one of those people, I don’t want to be known as a failure please help!

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. what number should be placed in the box to complete the division calculation?