My book is 52 pages. i have already read 18 pages. i plan to read 10 pages each day until i finish the book. estimate about how many days it will take to finish reading the book. a. 3b. 7c. 12d. 30

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?