We look at the division of 866857 by 63 
Let's see how many times 63 fits into 866857.

Advancing to step 1:
63 can be fit into 8 0 times, resulting in a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Append the next digit (6) from the dividend to 8 and continue with: 86 / 63

Let's proceed to step 2:
63 goes into 86 1 times with a remainder of 23.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 63 from 86 to get 23.
Grab the next digit (6) from the dividend, add it to 23, then carry on: 236 / 63

Step 3:
236 divided by 63 is 3 with a remainder of 47.
Write down 3 as next digit of the result. 
Result so far: 13.0
The remainder is 47 after subtracting 189 from 236.
Fetch the next digit (8) from the dividend, attach it to 47 and continue: 478 / 63

Advancing to step 4:
When dividing 478 by 63, we get 7 with a remainder of 37.
The number 7 becomes the next digit in our result. 
Result so far: 137.0
If we take 441 away from 478, we end up with 37.
Bring next digit (5) of the dividend behind the 37 and repeat the process: 375 / 63

Going ahead to step 5:
63 can be fit into 375 5 times, resulting in a remainder of 60.
Write down 5 as next digit of the result. 
Result so far: 1375.0
Deduct 315 from 375 and we're left with 60.
Include the next digit (7) from the dividend after 60, then repeat: 607 / 63

Going ahead to step 6:
63 goes into 607 9 times with a remainder of 40.
The next digit of our result is 9. 
Result so far: 13759.0
If we subtract 567 from 607, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 7:
When dividing 400 by 63, we get 6 with a remainder of 22.
The number 6 becomes the next digit in our result. 
Result so far: 13759.6
Subtracting 378 from 400 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 8:
The number 63 fits into 220 3 times, leaving a remainder of 31.
The number 3 becomes the next digit in our result. 
Result so far: 13759.63
If we take 189 away from 220, we end up with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Step 9:
The number 63 fits into 310 4 times, leaving a remainder of 58.
Record the quotient 4 as the next digit in the result. 
Result so far: 13759.634
If we take 252 away from 310, we end up with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Moving on to step 10:
63 can be fit into 580 9 times, resulting in a remainder of 13.
The number 9 becomes the next digit in our result. 
Result so far: 13759.6349
Subtracting 567 from 580 leaves us with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Step 11:
63 goes into 130 2 times with a remainder of 4.
Record the quotient 2 as the next digit in the result. 
Result so far: 13759.63492
Deduct 126 from 130 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 12:
63 goes into 40 0 times with a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 13759.63492
If we take 0 away from 40, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 13:
400 divided by 63 is 6 with a remainder of 22.
Use 6 as the next digit of our solution. 
Result so far: 13759.6349206
Deduct 378 from 400 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Step 14:
When dividing 220 by 63, we get 3 with a remainder of 31.
The next digit of our result is 3. 
Result so far: 13759.63492063
The remainder is 31 after subtracting 189 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

In conclusion, the division gives 13759.63492063 with a balance of 3.1e-08.