We divide 828169 by 21
We're looking to find how many times 21 goes into 828169.

On to step 1:
When dividing 8 by 21, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Append the next digit (2) from the dividend to 8 and continue with: 82 / 21

Moving on to step 2:
21 goes into 82 3 times with a remainder of 19.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we subtract 63 from 82, we get 19.
Take the next digit (8) from the dividend and append it to 19, then repeat: 198 / 21

Step 3:
The number 21 fits into 198 9 times, leaving a remainder of 9.
Record the quotient 9 as the next digit in the result. 
Result so far: 39.0
The remainder is 9 after subtracting 189 from 198.
Append the next digit (1) from the dividend to 9 and continue with: 91 / 21

On to step 4:
When dividing 91 by 21, we get 4 with a remainder of 7.
Put 4 as the next digit of the answer. 
Result so far: 394.0
If we take 84 away from 91, we end up with 7.
Grab the next digit (6) from the dividend, add it to 7, then carry on: 76 / 21

Moving on to step 5:
If we divide 76 by 21, we get 3 and a remainder of 13.
The number 3 becomes the next digit in our result. 
Result so far: 3943.0
If we subtract 63 from 76, we get 13.
Append the next digit (9) from the dividend to 13 and continue with: 139 / 21

On to step 6:
21 goes into 139 6 times with a remainder of 13.
Use 6 as the next digit of our solution. 
Result so far: 39436.0
Subtracting 126 from 139 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.

On to step 7:
130 divided by 21 is 6 with a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 39436.6
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.

Advancing to step 8:
21 can be fit into 40 1 times, resulting in a remainder of 19.
Put 1 as the next digit of the answer. 
Result so far: 39436.61
The remainder is 19 after subtracting 21 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

On to step 9:
When dividing 190 by 21, we get 9 with a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 39436.619
If we subtract 189 from 190, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 10:
When dividing 10 by 21, we get 0 with a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 39436.619
Subtracting 0 from 10 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 11:
When dividing 100 by 21, we get 4 with a remainder of 16.
The next digit of our result is 4. 
Result so far: 39436.61904
Deduct 84 from 100 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 12:
If we divide 160 by 21, we get 7 and a remainder of 13.
The number 7 becomes the next digit in our result. 
Result so far: 39436.619047
The remainder is 13 after subtracting 147 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Let's proceed to step 13:
The number 21 fits into 130 6 times, leaving a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 39436.6190476
If we take 126 away from 130, we end up 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.

Moving on to step 14:
21 can be fit into 40 1 times, resulting in a remainder of 19.
Record the quotient 1 as the next digit in the result. 
Result so far: 39436.61904761
If we take 21 away from 40, we end up with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

In conclusion, the division gives 39436.61904761 with a balance of 1.9e-08.