Solve (x + 1 < 5) ∩ (x - 4 > -3). {all real numbers} {x | 1 < x < 4} {x | x < 4 or x > 1}

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?