826449 ÷ 21 
Our goal is to divide 826449 by 21.

Moving on to step 1:
8 divided by 21 is 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Append the next digit (2) from the dividend to 8 and continue with: 82 / 21

Let's proceed to step 2:
82 divided by 21 is 3 with a remainder of 19.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we take 63 away from 82, we end up with 19.
Take the next digit (6) from the dividend and append it to 19, then repeat: 196 / 21

Step 3:
The number 21 fits into 196 9 times, leaving a remainder of 7.
Record the quotient 9 as the next digit in the result. 
Result so far: 39.0
The remainder is 7 after subtracting 189 from 196.
Include the next digit (4) from the dividend after 7, then repeat: 74 / 21

Moving on to step 4:
The number 21 fits into 74 3 times, leaving a remainder of 11.
Record the quotient 3 as the next digit in the result. 
Result so far: 393.0
Subtract 63 from 74 to get 11.
Grab the next digit (4) from the dividend, add it to 11, then carry on: 114 / 21

Going ahead to step 5:
If we divide 114 by 21, we get 5 and a remainder of 9.
Put 5 as the next digit of the answer. 
Result so far: 3935.0
Deduct 105 from 114 and we're left with 9.
Append the next digit (9) from the dividend to 9 and continue with: 99 / 21

On to step 6:
21 can be fit into 99 4 times, resulting in a remainder of 15.
Put 4 as the next digit of the answer. 
Result so far: 39354.0
Subtract 84 from 99 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 7:
21 goes into 150 7 times with a remainder of 3.
The number 7 becomes the next digit in our result. 
Result so far: 39354.7
Subtract 147 from 150 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 8:
21 can be fit into 30 1 times, resulting in a remainder of 9.
The next digit of our result is 1. 
Result so far: 39354.71
If we take 21 away from 30, we end up 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 9:
When dividing 90 by 21, we get 4 with a remainder of 6.
The next digit of our result is 4. 
Result so far: 39354.714
Subtract 84 from 90 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 10:
If we divide 60 by 21, we get 2 and a remainder of 18.
Write down 2 as next digit of the result. 
Result so far: 39354.7142
Subtract 42 from 60 to 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.

Moving on to step 11:
21 goes into 180 8 times with a remainder of 12.
Write down 8 as next digit of the result. 
Result so far: 39354.71428
If we take 168 away from 180, we end up 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.

Let's proceed to step 12:
21 goes into 120 5 times with a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 39354.714285
If we subtract 105 from 120, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 13:
150 divided by 21 is 7 with a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 39354.7142857
Subtract 147 from 150 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 14:
The number 21 fits into 30 1 times, leaving a remainder of 9.
The number 1 becomes the next digit in our result. 
Result so far: 39354.71428571
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.

The final result is 39354.71428571 with a remainder of 9e-09.