Dividing using the Box Method

Box Method 421 4 2 1 8 0 0 4 0 0 2 0 338 r3 0 3 3 8 r3 0 1 1 12 1 1 12 3 3 32 3 129 1 2 9 5 1 1 10 4 4 45 0 1 9 6 4 r1 3 2 2 27 1 1 18 1 1 12 1