Let's divide 412044 by 21
We want to figure out the number of times 412044 can be divided by 21.

Advancing to step 1:
21 goes into 4 0 times with a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Append the next digit (1) from the dividend to 4 and continue with: 41 / 21

Going ahead to step 2:
The number 21 fits into 41 1 times, leaving a remainder of 20.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 21 from 41 to get 20.
Include the next digit (2) from the dividend after 20, then repeat: 202 / 21

Moving on to step 3:
202 divided by 21 is 9 with a remainder of 13.
The number 9 becomes the next digit in our result. 
Result so far: 19.0
If we subtract 189 from 202, we get 13.
Fetch the next digit (0) from the dividend, attach it to 13 and continue: 130 / 21

On to step 4:
If we divide 130 by 21, we get 6 and a remainder of 4.
Write down 6 as next digit of the result. 
Result so far: 196.0
If we take 126 away from 130, we end up with 4.
Take the next digit (4) from the dividend and append it to 4, then repeat: 44 / 21

Going ahead to step 5:
44 divided by 21 is 2 with a remainder of 2.
Put 2 as the next digit of the answer. 
Result so far: 1962.0
Subtract 42 from 44 to get 2.
Bring next digit (4) of the dividend behind the 2 and repeat the process: 24 / 21

Let's proceed to step 6:
24 divided by 21 is 1 with a remainder of 3.
The next digit of our result is 1. 
Result so far: 19621.0
The remainder is 3 after subtracting 21 from 24.
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 7:
The number 21 fits into 30 1 times, leaving a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 19621.1
Subtracting 21 from 30 leaves us 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.

Let's proceed to step 8:
21 goes into 90 4 times with a remainder of 6.
Record the quotient 4 as the next digit in the result. 
Result so far: 19621.14
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 9:
21 goes into 60 2 times with a remainder of 18.
Put 2 as the next digit of the answer. 
Result so far: 19621.142
Deduct 42 from 60 and we're left 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.

Going ahead to step 10:
The number 21 fits into 180 8 times, leaving a remainder of 12.
The next digit of our result is 8. 
Result so far: 19621.1428
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.

Going ahead to step 11:
120 divided by 21 is 5 with a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 19621.14285
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.

On to step 12:
150 divided by 21 is 7 with a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 19621.142857
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.

Let's proceed to step 13:
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: 19621.1428571
Subtracting 21 from 30 leaves us 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.

Step 14:
21 goes into 90 4 times with a remainder of 6.
Record the quotient 4 as the next digit in the result. 
Result so far: 19621.14285714
The remainder is 6 after subtracting 84 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

The final outcome is 19621.14285714, with a leftover of 6e-09.