We look at the division of 383926 by 21 
Our goal is to divide 383926 by 21.

Let's proceed to step 1:
21 goes into 3 0 times with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Include the next digit (8) from the dividend after 3, then repeat: 38 / 21

Step 2:
The number 21 fits into 38 1 times, leaving a remainder of 17.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 21 from 38 leaves us with 17.
Fetch the next digit (3) from the dividend, attach it to 17 and continue: 173 / 21

Step 3:
173 divided by 21 is 8 with a remainder of 5.
Write down 8 as next digit of the result. 
Result so far: 18.0
The remainder is 5 after subtracting 168 from 173.
Append the next digit (9) from the dividend to 5 and continue with: 59 / 21

Moving on to step 4:
21 goes into 59 2 times with a remainder of 17.
The number 2 becomes the next digit in our result. 
Result so far: 182.0
The remainder is 17 after subtracting 42 from 59.
Include the next digit (2) from the dividend after 17, then repeat: 172 / 21

Step 5:
If we divide 172 by 21, we get 8 and a remainder of 4.
The number 8 becomes the next digit in our result. 
Result so far: 1828.0
Subtract 168 from 172 to get 4.
Grab the next digit (6) from the dividend, add it to 4, then carry on: 46 / 21

On to step 6:
21 goes into 46 2 times with a remainder of 4.
Use 2 as the next digit of our solution. 
Result so far: 18282.0
If we subtract 42 from 46, 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.

On to step 7:
21 goes into 40 1 times with a remainder of 19.
Put 1 as the next digit of the answer. 
Result so far: 18282.1
Subtracting 21 from 40 leaves us with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Let's proceed to step 8:
The number 21 fits into 190 9 times, leaving a remainder of 1.
The next digit of our result is 9. 
Result so far: 18282.19
Deduct 189 from 190 and we're left 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.

Advancing to step 9:
21 goes into 10 0 times with a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 18282.19
If we subtract 0 from 10, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 10:
If we divide 100 by 21, we get 4 and a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 18282.1904
If we take 84 away from 100, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 11:
If we divide 160 by 21, we get 7 and a remainder of 13.
Write down 7 as next digit of the result. 
Result so far: 18282.19047
If we take 147 away from 160, we end up 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.

Moving on to step 12:
When dividing 130 by 21, we get 6 with a remainder of 4.
Put 6 as the next digit of the answer. 
Result so far: 18282.190476
Subtract 126 from 130 to 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.

Let's proceed to step 13:
When dividing 40 by 21, we get 1 with a remainder of 19.
The next digit of our result is 1. 
Result so far: 18282.1904761
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.

Moving on to step 14:
If we divide 190 by 21, we get 9 and a remainder of 1.
Record the quotient 9 as the next digit in the result. 
Result so far: 18282.19047619
If we take 189 away from 190, we end up 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.

In conclusion, the division gives 18282.19047619 with a balance of 1e-09.