We look at the division of 865912 by 8 
We want to figure out the number of times 865912 can be divided by 8.

Going ahead to step 1:
The number 8 fits into 8 1 times, leaving a remainder of 0.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 8 from 8 to get 0.
Include the next digit (6) from the dividend after 0, then repeat: 6 / 8

Going ahead to step 2:
If we divide 6 by 8, we get 0 and a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 10.0
Deduct 0 from 6 and we're left with 6.
Bring next digit (5) of the dividend behind the 6 and repeat the process: 65 / 8

Let's proceed to step 3:
The number 8 fits into 65 8 times, leaving a remainder of 1.
Put 8 as the next digit of the answer. 
Result so far: 108.0
The remainder is 1 after subtracting 64 from 65.
Fetch the next digit (9) from the dividend, attach it to 1 and continue: 19 / 8

Going ahead to step 4:
If we divide 19 by 8, we get 2 and a remainder of 3.
The next digit of our result is 2. 
Result so far: 1082.0
If we subtract 16 from 19, we get 3.
Append the next digit (1) from the dividend to 3 and continue with: 31 / 8

Moving on to step 5:
31 divided by 8 is 3 with a remainder of 7.
The number 3 becomes the next digit in our result. 
Result so far: 10823.0
Subtracting 24 from 31 leaves us with 7.
Append the next digit (2) from the dividend to 7 and continue with: 72 / 8

Going ahead to step 6:
If we divide 72 by 8, we get 9 and a remainder of 0.
Put 9 as the next digit of the answer. 
Result so far: 108239.0
Subtracting 72 from 72 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 7:
8 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 108239.0
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 8:
The number 8 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 108239.0
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 108239.0 and a remainder of 0.0.