We're dividing 863220 by 12 
Our goal is to divide 863220 by 12.

Step 1:
When dividing 8 by 12, we get 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 12

Moving on to step 2:
If we divide 86 by 12, we get 7 and a remainder of 2.
The next digit of our result is 7. 
Result so far: 7.0
The remainder is 2 after subtracting 84 from 86.
Fetch the next digit (3) from the dividend, attach it to 2 and continue: 23 / 12

Moving on to step 3:
23 divided by 12 is 1 with a remainder of 11.
Put 1 as the next digit of the answer. 
Result so far: 71.0
Subtract 12 from 23 to get 11.
Grab the next digit (2) from the dividend, add it to 11, then carry on: 112 / 12

Going ahead to step 4:
If we divide 112 by 12, we get 9 and a remainder of 4.
Record the quotient 9 as the next digit in the result. 
Result so far: 719.0
Subtract 108 from 112 to get 4.
Take the next digit (2) from the dividend and append it to 4, then repeat: 42 / 12

Step 5:
12 goes into 42 3 times with a remainder of 6.
Put 3 as the next digit of the answer. 
Result so far: 7193.0
Deduct 36 from 42 and we're left with 6.
Take the next digit (0) from the dividend and append it to 6, then repeat: 60 / 12

Moving on to step 6:
12 can be fit into 60 5 times, resulting in a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 71935.0
Subtract 60 from 60 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 7:
12 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 71935.0
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 8:
12 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 71935.0
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.

The final result is 71935.0 with a remainder of 0.0.