866317 ÷ 12 
Our goal is to divide 866317 by 12.

Moving on to step 1:
If we divide 8 by 12, we get 0 and a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 12

Moving on to step 2:
12 goes into 86 7 times with a remainder of 2.
The next digit of our result is 7. 
Result so far: 7.0
Subtracting 84 from 86 leaves us with 2.
Take the next digit (6) from the dividend and append it to 2, then repeat: 26 / 12

Let's proceed to step 3:
26 divided by 12 is 2 with a remainder of 2.
Write down 2 as next digit of the result. 
Result so far: 72.0
Deduct 24 from 26 and we're left with 2.
Grab the next digit (3) from the dividend, add it to 2, then carry on: 23 / 12

Step 4:
12 can be fit into 23 1 times, resulting in a remainder of 11.
The next digit of our result is 1. 
Result so far: 721.0
Subtracting 12 from 23 leaves us with 11.
Include the next digit (1) from the dividend after 11, then repeat: 111 / 12

Going ahead to step 5:
12 can be fit into 111 9 times, resulting in a remainder of 3.
Record the quotient 9 as the next digit in the result. 
Result so far: 7219.0
Subtract 108 from 111 to get 3.
Append the next digit (7) from the dividend to 3 and continue with: 37 / 12

Going ahead to step 6:
The number 12 fits into 37 3 times, leaving a remainder of 1.
The next digit of our result is 3. 
Result so far: 72193.0
Subtracting 36 from 37 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 7:
When dividing 10 by 12, we get 0 with a remainder of 10.
The next digit of our result is 0. 
Result so far: 72193.0
If we take 0 away from 10, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 8:
The number 12 fits into 100 8 times, leaving a remainder of 4.
The next digit of our result is 8. 
Result so far: 72193.08
If we subtract 96 from 100, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 9:
The number 12 fits into 40 3 times, leaving a remainder of 4.
The next digit of our result is 3. 
Result so far: 72193.083
Subtract 36 from 40 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 10:
When dividing 40 by 12, we get 3 with a remainder of 4.
Use 3 as the next digit of our solution. 
Result so far: 72193.0833
If we subtract 36 from 40, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The final result is 72193.0833 with a remainder of 4e-05.