Let's divide 406744 by 21
We want to divide 406744 by 21.

Step 1:
If we divide 4 by 21, we get 0 and 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 (0) from the dividend to 4 and continue with: 40 / 21

Step 2:
If we divide 40 by 21, we get 1 and a remainder of 19.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 21 away from 40, we end up with 19.
Fetch the next digit (6) from the dividend, attach it to 19 and continue: 196 / 21

Moving on to step 3:
196 divided by 21 is 9 with a remainder of 7.
Record the quotient 9 as the next digit in the result. 
Result so far: 19.0
If we subtract 189 from 196, we get 7.
Take the next digit (7) from the dividend and append it to 7, then repeat: 77 / 21

Advancing to step 4:
21 goes into 77 3 times with a remainder of 14.
Put 3 as the next digit of the answer. 
Result so far: 193.0
Deduct 63 from 77 and we're left with 14.
Grab the next digit (4) from the dividend, add it to 14, then carry on: 144 / 21

Advancing to step 5:
When dividing 144 by 21, we get 6 with a remainder of 18.
The number 6 becomes the next digit in our result. 
Result so far: 1936.0
If we subtract 126 from 144, we get 18.
Append the next digit (4) from the dividend to 18 and continue with: 184 / 21

Step 6:
21 goes into 184 8 times with a remainder of 16.
Record the quotient 8 as the next digit in the result. 
Result so far: 19368.0
If we subtract 168 from 184, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 7:
The number 21 fits into 160 7 times, leaving a remainder of 13.
Record the quotient 7 as the next digit in the result. 
Result so far: 19368.7
Deduct 147 from 160 and we're left 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.

Let's proceed to step 8:
130 divided by 21 is 6 with a remainder of 4.
Put 6 as the next digit of the answer. 
Result so far: 19368.76
If we subtract 126 from 130, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 9:
If we divide 40 by 21, we get 1 and a remainder of 19.
Record the quotient 1 as the next digit in the result. 
Result so far: 19368.761
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.

Advancing to step 10:
When dividing 190 by 21, we get 9 with a remainder of 1.
Use 9 as the next digit of our solution. 
Result so far: 19368.7619
Subtracting 189 from 190 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 11:
If we divide 10 by 21, we get 0 and a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 19368.7619
The remainder is 10 after subtracting 0 from 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 12:
When dividing 100 by 21, we get 4 with a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 19368.761904
Subtract 84 from 100 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 13:
If we divide 160 by 21, we get 7 and a remainder of 13.
The next digit of our result is 7. 
Result so far: 19368.7619047
Subtract 147 from 160 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 14:
21 goes into 130 6 times with a remainder of 4.
Use 6 as the next digit of our solution. 
Result so far: 19368.76190476
Subtracting 126 from 130 leaves us 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.

In conclusion, the division gives 19368.76190476 with a balance of 4e-09.