Let's divide 515821 by 63
We want to divide 515821 by 63.

Step 1:
When dividing 5 by 63, we get 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Include the next digit (1) from the dividend after 5, then repeat: 51 / 63

Going ahead to step 2:
51 divided by 63 is 0 with a remainder of 51.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 51, we get 51.
Take the next digit (5) from the dividend and append it to 51, then repeat: 515 / 63

Let's proceed to step 3:
If we divide 515 by 63, we get 8 and a remainder of 11.
Write down 8 as next digit of the result. 
Result so far: 8.0
Subtract 504 from 515 to get 11.
Fetch the next digit (8) from the dividend, attach it to 11 and continue: 118 / 63

Going ahead to step 4:
63 goes into 118 1 times with a remainder of 55.
The next digit of our result is 1. 
Result so far: 81.0
Subtract 63 from 118 to get 55.
Include the next digit (2) from the dividend after 55, then repeat: 552 / 63

Going ahead to step 5:
552 divided by 63 is 8 with a remainder of 48.
Put 8 as the next digit of the answer. 
Result so far: 818.0
Subtract 504 from 552 to get 48.
Take the next digit (1) from the dividend and append it to 48, then repeat: 481 / 63

Going ahead to step 6:
481 divided by 63 is 7 with a remainder of 40.
Put 7 as the next digit of the answer. 
Result so far: 8187.0
Deduct 441 from 481 and we're left 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.

Step 7:
63 goes into 400 6 times with a remainder of 22.
The number 6 becomes the next digit in our result. 
Result so far: 8187.6
If we take 378 away from 400, we end up 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.

Moving on to step 8:
If we divide 220 by 63, we get 3 and a remainder of 31.
Use 3 as the next digit of our solution. 
Result so far: 8187.63
Subtracting 189 from 220 leaves us 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.

Going ahead to step 9:
If we divide 310 by 63, we get 4 and a remainder of 58.
Put 4 as the next digit of the answer. 
Result so far: 8187.634
Subtract 252 from 310 to get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Step 10:
580 divided by 63 is 9 with a remainder of 13.
Put 9 as the next digit of the answer. 
Result so far: 8187.6349
If we subtract 567 from 580, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Moving on to step 11:
130 divided by 63 is 2 with a remainder of 4.
The number 2 becomes the next digit in our result. 
Result so far: 8187.63492
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 can be fit into 40 0 times, resulting in a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 8187.63492
If we subtract 0 from 40, 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.

Advancing to step 13:
When dividing 400 by 63, we get 6 with a remainder of 22.
Put 6 as the next digit of the answer. 
Result so far: 8187.6349206
If we take 378 away from 400, we end up 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.

Advancing to step 14:
63 goes into 220 3 times with a remainder of 31.
The number 3 becomes the next digit in our result. 
Result so far: 8187.63492063
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.

The final result is 8187.63492063 with a remainder of 3.1e-08.