We look at the division of 811866 by 63 
We're looking to find how many times 63 goes into 811866.

On to step 1:
8 divided by 63 is 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Fetch the next digit (1) from the dividend, attach it to 8 and continue: 81 / 63

Advancing to step 2:
63 goes into 81 1 times with a remainder of 18.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 63 from 81, we get 18.
Bring next digit (1) of the dividend behind the 18 and repeat the process: 181 / 63

Moving on to step 3:
When dividing 181 by 63, we get 2 with a remainder of 55.
Write down 2 as next digit of the result. 
Result so far: 12.0
If we subtract 126 from 181, we get 55.
Take the next digit (8) from the dividend and append it to 55, then repeat: 558 / 63

Advancing to step 4:
If we divide 558 by 63, we get 8 and a remainder of 54.
The number 8 becomes the next digit in our result. 
Result so far: 128.0
Deduct 504 from 558 and we're left with 54.
Fetch the next digit (6) from the dividend, attach it to 54 and continue: 546 / 63

On to step 5:
If we divide 546 by 63, we get 8 and a remainder of 42.
Use 8 as the next digit of our solution. 
Result so far: 1288.0
If we take 504 away from 546, we end up with 42.
Grab the next digit (6) from the dividend, add it to 42, then carry on: 426 / 63

Step 6:
If we divide 426 by 63, we get 6 and a remainder of 48.
Put 6 as the next digit of the answer. 
Result so far: 12886.0
If we take 378 away from 426, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 7:
If we divide 480 by 63, we get 7 and a remainder of 39.
Record the quotient 7 as the next digit in the result. 
Result so far: 12886.7
If we subtract 441 from 480, we get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

On to step 8:
When dividing 390 by 63, we get 6 with a remainder of 12.
The next digit of our result is 6. 
Result so far: 12886.76
Subtracting 378 from 390 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 9:
The number 63 fits into 120 1 times, leaving a remainder of 57.
The number 1 becomes the next digit in our result. 
Result so far: 12886.761
The remainder is 57 after subtracting 63 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Going ahead to step 10:
63 can be fit into 570 9 times, resulting in a remainder of 3.
Record the quotient 9 as the next digit in the result. 
Result so far: 12886.7619
Subtracting 567 from 570 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 11:
When dividing 30 by 63, we get 0 with a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 12886.7619
The remainder is 30 after subtracting 0 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 12:
The number 63 fits into 300 4 times, leaving a remainder of 48.
Write down 4 as next digit of the result. 
Result so far: 12886.761904
Subtracting 252 from 300 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 13:
63 goes into 480 7 times with a remainder of 39.
The next digit of our result is 7. 
Result so far: 12886.7619047
If we subtract 441 from 480, we get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Step 14:
63 can be fit into 390 6 times, resulting in a remainder of 12.
Record the quotient 6 as the next digit in the result. 
Result so far: 12886.76190476
The remainder is 12 after subtracting 378 from 390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

After the division, we end up with 12886.76190476 and a remainder of 1.2e-08.