482271 divided by 21 
We want to figure out the number of times 482271 can be divided by 21.

Moving on to step 1:
When dividing 4 by 21, we get 0 with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Include the next digit (8) from the dividend after 4, then repeat: 48 / 21

On to step 2:
48 divided by 21 is 2 with a remainder of 6.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Deduct 42 from 48 and we're left with 6.
Append the next digit (2) from the dividend to 6 and continue with: 62 / 21

Advancing to step 3:
When dividing 62 by 21, we get 2 with a remainder of 20.
Use 2 as the next digit of our solution. 
Result so far: 22.0
Subtracting 42 from 62 leaves us with 20.
Take the next digit (2) from the dividend and append it to 20, then repeat: 202 / 21

Going ahead to step 4:
If we divide 202 by 21, we get 9 and a remainder of 13.
The number 9 becomes the next digit in our result. 
Result so far: 229.0
If we take 189 away from 202, we end up with 13.
Grab the next digit (7) from the dividend, add it to 13, then carry on: 137 / 21

Advancing to step 5:
21 can be fit into 137 6 times, resulting in a remainder of 11.
Use 6 as the next digit of our solution. 
Result so far: 2296.0
If we take 126 away from 137, we end up with 11.
Append the next digit (1) from the dividend to 11 and continue with: 111 / 21

On to step 6:
If we divide 111 by 21, we get 5 and a remainder of 6.
Put 5 as the next digit of the answer. 
Result so far: 22965.0
If we subtract 105 from 111, we 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.

On to step 7:
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: 22965.2
If we take 42 away from 60, we end up with 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 8:
21 can be fit into 180 8 times, resulting in a remainder of 12.
Write down 8 as next digit of the result. 
Result so far: 22965.28
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.

Step 9:
120 divided by 21 is 5 with a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 22965.285
The remainder is 15 after subtracting 105 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 10:
21 goes into 150 7 times with a remainder of 3.
Write down 7 as next digit of the result. 
Result so far: 22965.2857
If we take 147 away from 150, we end up 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 11:
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: 22965.28571
If we subtract 21 from 30, we get 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 12:
The number 21 fits into 90 4 times, leaving a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 22965.285714
If we subtract 84 from 90, we 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 13:
21 can be fit into 60 2 times, resulting in a remainder of 18.
The number 2 becomes the next digit in our result. 
Result so far: 22965.2857142
The remainder is 18 after subtracting 42 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Let's proceed to step 14:
21 can be fit into 180 8 times, resulting in a remainder of 12.
The number 8 becomes the next digit in our result. 
Result so far: 22965.28571428
Deduct 168 from 180 and we're left 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.

The final outcome is 22965.28571428, with a leftover of 1.2e-08.