We look at the division of 484586 by 21 
Our goal is to divide 484586 by 21.

Advancing to step 1:
21 can be fit into 4 0 times, resulting in a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Grab the next digit (8) from the dividend, add it to 4, then carry on: 48 / 21

On to step 2:
21 goes into 48 2 times with a remainder of 6.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtracting 42 from 48 leaves us with 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 21

On to step 3:
If we divide 64 by 21, we get 3 and a remainder of 1.
Use 3 as the next digit of our solution. 
Result so far: 23.0
Deduct 63 from 64 and we're left with 1.
Fetch the next digit (5) from the dividend, attach it to 1 and continue: 15 / 21

Step 4:
21 can be fit into 15 0 times, resulting in a remainder of 15.
Record the quotient 0 as the next digit in the result. 
Result so far: 230.0
If we take 0 away from 15, we end up with 15.
Grab the next digit (8) from the dividend, add it to 15, then carry on: 158 / 21

Advancing to step 5:
21 can be fit into 158 7 times, resulting in a remainder of 11.
Record the quotient 7 as the next digit in the result. 
Result so far: 2307.0
If we take 147 away from 158, we end up with 11.
Take the next digit (6) from the dividend and append it to 11, then repeat: 116 / 21

Going ahead to step 6:
21 goes into 116 5 times with a remainder of 11.
The next digit of our result is 5. 
Result so far: 23075.0
If we subtract 105 from 116, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 7:
110 divided by 21 is 5 with a remainder of 5.
The next digit of our result is 5. 
Result so far: 23075.5
Subtracting 105 from 110 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 8:
The number 21 fits into 50 2 times, leaving a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 23075.52
If we subtract 42 from 50, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 9:
If we divide 80 by 21, we get 3 and a remainder of 17.
The number 3 becomes the next digit in our result. 
Result so far: 23075.523
The remainder is 17 after subtracting 63 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 10:
The number 21 fits into 170 8 times, leaving a remainder of 2.
Use 8 as the next digit of our solution. 
Result so far: 23075.5238
If we take 168 away from 170, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 11:
When dividing 20 by 21, we get 0 with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 23075.5238
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 12:
The number 21 fits into 200 9 times, leaving a remainder of 11.
Put 9 as the next digit of the answer. 
Result so far: 23075.523809
If we take 189 away from 200, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 13:
21 can be fit into 110 5 times, resulting in a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 23075.5238095
If we take 105 away from 110, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 14:
The number 21 fits into 50 2 times, leaving a remainder of 8.
The next digit of our result is 2. 
Result so far: 23075.52380952
If we take 42 away from 50, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

After the division, we end up with 23075.52380952 and a remainder of 8e-09.