We're dividing 478944 by 21 
We want to figure out the number of times 478944 can be divided by 21.

Let's proceed to step 1:
The number 21 fits into 4 0 times, leaving a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Append the next digit (7) from the dividend to 4 and continue with: 47 / 21

On to step 2:
21 can be fit into 47 2 times, resulting in a remainder of 5.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 5 after subtracting 42 from 47.
Grab the next digit (8) from the dividend, add it to 5, then carry on: 58 / 21

Advancing to step 3:
The number 21 fits into 58 2 times, leaving a remainder of 16.
The number 2 becomes the next digit in our result. 
Result so far: 22.0
Deduct 42 from 58 and we're left with 16.
Append the next digit (9) from the dividend to 16 and continue with: 169 / 21

Going ahead to step 4:
If we divide 169 by 21, we get 8 and a remainder of 1.
Record the quotient 8 as the next digit in the result. 
Result so far: 228.0
Deduct 168 from 169 and we're left with 1.
Take the next digit (4) from the dividend and append it to 1, then repeat: 14 / 21

Moving on to step 5:
If we divide 14 by 21, we get 0 and a remainder of 14.
Use 0 as the next digit of our solution. 
Result so far: 2280.0
The remainder is 14 after subtracting 0 from 14.
Fetch the next digit (4) from the dividend, attach it to 14 and continue: 144 / 21

Let's proceed to step 6:
21 goes into 144 6 times with a remainder of 18.
The next digit of our result is 6. 
Result so far: 22806.0
Subtracting 126 from 144 leaves us 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.

On to step 7:
The number 21 fits into 180 8 times, leaving a remainder of 12.
The number 8 becomes the next digit in our result. 
Result so far: 22806.8
Subtracting 168 from 180 leaves us 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.

Advancing to step 8:
21 can be fit into 120 5 times, resulting in a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 22806.85
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.

Moving on to step 9:
When dividing 150 by 21, we get 7 with a remainder of 3.
Write down 7 as next digit of the result. 
Result so far: 22806.857
Subtracting 147 from 150 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.

Advancing to step 10:
If we divide 30 by 21, we get 1 and a remainder of 9.
The number 1 becomes the next digit in our result. 
Result so far: 22806.8571
Subtract 21 from 30 to 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.

On to step 11:
90 divided by 21 is 4 with a remainder of 6.
The number 4 becomes the next digit in our result. 
Result so far: 22806.85714
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.

On to step 12:
The number 21 fits into 60 2 times, leaving a remainder of 18.
Record the quotient 2 as the next digit in the result. 
Result so far: 22806.857142
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 13:
The number 21 fits into 180 8 times, leaving a remainder of 12.
The next digit of our result is 8. 
Result so far: 22806.8571428
Subtracting 168 from 180 leaves us 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.

Advancing to step 14:
When dividing 120 by 21, we get 5 with a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 22806.85714285
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.

In conclusion, the division gives 22806.85714285 with a balance of 1.5e-08.