We're dividing 821019 by 21 
Our goal is to divide 821019 by 21.

Going ahead to step 1:
21 goes into 8 0 times with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Include the next digit (2) from the dividend after 8, then repeat: 82 / 21

Step 2:
21 goes into 82 3 times with a remainder of 19.
The next digit of our result is 3. 
Result so far: 3.0
Deduct 63 from 82 and we're left with 19.
Include the next digit (1) from the dividend after 19, then repeat: 191 / 21

Moving on to step 3:
When dividing 191 by 21, we get 9 with a remainder of 2.
Record the quotient 9 as the next digit in the result. 
Result so far: 39.0
Deduct 189 from 191 and we're left with 2.
Append the next digit (0) from the dividend to 2 and continue with: 20 / 21

Advancing to step 4:
21 can be fit into 20 0 times, resulting in a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 390.0
If we subtract 0 from 20, we get 20.
Grab the next digit (1) from the dividend, add it to 20, then carry on: 201 / 21

Step 5:
If we divide 201 by 21, we get 9 and a remainder of 12.
The number 9 becomes the next digit in our result. 
Result so far: 3909.0
If we subtract 189 from 201, we get 12.
Bring next digit (9) of the dividend behind the 12 and repeat the process: 129 / 21

Advancing to step 6:
When dividing 129 by 21, we get 6 with a remainder of 3.
Record the quotient 6 as the next digit in the result. 
Result so far: 39096.0
Subtracting 126 from 129 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.

Step 7:
When dividing 30 by 21, we get 1 with a remainder of 9.
The number 1 becomes the next digit in our result. 
Result so far: 39096.1
Subtracting 21 from 30 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 8:
21 can be fit into 90 4 times, resulting in a remainder of 6.
Write down 4 as next digit of the result. 
Result so far: 39096.14
Deduct 84 from 90 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 9:
When dividing 60 by 21, we get 2 with a remainder of 18.
Record the quotient 2 as the next digit in the result. 
Result so far: 39096.142
If we subtract 42 from 60, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 10:
The number 21 fits into 180 8 times, leaving a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 39096.1428
Subtract 168 from 180 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 11:
21 can be fit into 120 5 times, resulting in a remainder of 15.
The next digit of our result is 5. 
Result so far: 39096.14285
If we take 105 away from 120, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 12:
21 goes into 150 7 times with a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 39096.142857
Deduct 147 from 150 and we're left 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.

Step 13:
21 can be fit into 30 1 times, resulting in a remainder of 9.
Put 1 as the next digit of the answer. 
Result so far: 39096.1428571
Deduct 21 from 30 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Let's proceed to step 14:
21 can be fit into 90 4 times, resulting in a remainder of 6.
Use 4 as the next digit of our solution. 
Result so far: 39096.14285714
Deduct 84 from 90 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

The quotient of the division is 39096.14285714, and the remainder is 6e-09.