We look at the division of 21639021 by 518 
Our goal is to divide 21639021 by 518.

Going ahead to step 1:
2 divided by 518 is 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 518

Step 2:
518 goes into 21 0 times with a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 21 after subtracting 0 from 21.
Grab the next digit (6) from the dividend, add it to 21, then carry on: 216 / 518

Let's proceed to step 3:
216 divided by 518 is 0 with a remainder of 216.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 216 and we're left with 216.
Include the next digit (3) from the dividend after 216, then repeat: 2163 / 518

On to step 4:
2163 divided by 518 is 4 with a remainder of 91.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtracting 2072 from 2163 leaves us with 91.
Include the next digit (9) from the dividend after 91, then repeat: 919 / 518

Going ahead to step 5:
518 can be fit into 919 1 times, resulting in a remainder of 401.
The next digit of our result is 1. 
Result so far: 41.0
Subtracting 518 from 919 leaves us with 401.
Grab the next digit (0) from the dividend, add it to 401, then carry on: 4010 / 518

Step 6:
518 goes into 4010 7 times with a remainder of 384.
Write down 7 as next digit of the result. 
Result so far: 417.0
Subtract 3626 from 4010 to get 384.
Append the next digit (2) from the dividend to 384 and continue with: 3842 / 518

Step 7:
If we divide 3842 by 518, we get 7 and a remainder of 216.
Put 7 as the next digit of the answer. 
Result so far: 4177.0
Subtract 3626 from 3842 to get 216.
Take the next digit (1) from the dividend and append it to 216, then repeat: 2161 / 518

Going ahead to step 8:
518 goes into 2161 4 times with a remainder of 89.
Record the quotient 4 as the next digit in the result. 
Result so far: 41774.0
Deduct 2072 from 2161 and we're left with 89.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

On to step 9:
If we divide 890 by 518, we get 1 and a remainder of 372.
Use 1 as the next digit of our solution. 
Result so far: 41774.1
The remainder is 372 after subtracting 518 from 890.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3720, and continue the process.

Let's proceed to step 10:
518 can be fit into 3720 7 times, resulting in a remainder of 94.
The next digit of our result is 7. 
Result so far: 41774.17
If we subtract 3626 from 3720, we get 94.
Since there are no more digits in the dividend, we add a zero to the remainder making it 940, and continue the process.

Moving on to step 11:
518 can be fit into 940 1 times, resulting in a remainder of 422.
Write down 1 as next digit of the result. 
Result so far: 41774.171
The remainder is 422 after subtracting 518 from 940.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4220, and continue the process.

Going ahead to step 12:
The number 518 fits into 4220 8 times, leaving a remainder of 76.
Record the quotient 8 as the next digit in the result. 
Result so far: 41774.1718
The remainder is 76 after subtracting 4144 from 4220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Advancing to step 13:
760 divided by 518 is 1 with a remainder of 242.
Write down 1 as next digit of the result. 
Result so far: 41774.17181
If we subtract 518 from 760, we get 242.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2420, and continue the process.

On to step 14:
When dividing 2420 by 518, we get 4 with a remainder of 348.
The number 4 becomes the next digit in our result. 
Result so far: 41774.171814
Deduct 2072 from 2420 and we're left with 348.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3480, and continue the process.

Advancing to step 15:
When dividing 3480 by 518, we get 6 with a remainder of 372.
Write down 6 as next digit of the result. 
Result so far: 41774.1718146
Subtract 3108 from 3480 to get 372.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3720, and continue the process.

Let's proceed to step 16:
The number 518 fits into 3720 7 times, leaving a remainder of 94.
Record the quotient 7 as the next digit in the result. 
Result so far: 41774.17181467
Deduct 3626 from 3720 and we're left with 94.
Since there are no more digits in the dividend, we add a zero to the remainder making it 940, and continue the process.

Our division results in 41774.17181467 with a remaining 9.4e-08.