We look at the division of 38964830 by 21 
Let's see how many times 21 fits into 38964830.

On to step 1:
21 can be fit into 3 0 times, resulting in a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Append the next digit (8) from the dividend to 3 and continue with: 38 / 21

Let's proceed to step 2:
38 divided by 21 is 1 with a remainder of 17.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 21 away from 38, we end up with 17.
Include the next digit (9) from the dividend after 17, then repeat: 179 / 21

Let's proceed to step 3:
If we divide 179 by 21, we get 8 and a remainder of 11.
The next digit of our result is 8. 
Result so far: 18.0
Deduct 168 from 179 and we're left with 11.
Grab the next digit (6) from the dividend, add it to 11, then carry on: 116 / 21

Let's proceed to step 4:
21 goes into 116 5 times with a remainder of 11.
Put 5 as the next digit of the answer. 
Result so far: 185.0
The remainder is 11 after subtracting 105 from 116.
Take the next digit (4) from the dividend and append it to 11, then repeat: 114 / 21

Let's proceed to step 5:
21 can be fit into 114 5 times, resulting in a remainder of 9.
The next digit of our result is 5. 
Result so far: 1855.0
If we take 105 away from 114, we end up with 9.
Grab the next digit (8) from the dividend, add it to 9, then carry on: 98 / 21

Going ahead to step 6:
The number 21 fits into 98 4 times, leaving a remainder of 14.
Put 4 as the next digit of the answer. 
Result so far: 18554.0
The remainder is 14 after subtracting 84 from 98.
Fetch the next digit (3) from the dividend, attach it to 14 and continue: 143 / 21

Step 7:
The number 21 fits into 143 6 times, leaving a remainder of 17.
The number 6 becomes the next digit in our result. 
Result so far: 185546.0
The remainder is 17 after subtracting 126 from 143.
Grab the next digit (0) from the dividend, add it to 17, then carry on: 170 / 21

Step 8:
21 goes into 170 8 times with a remainder of 2.
Put 8 as the next digit of the answer. 
Result so far: 1855468.0
Deduct 168 from 170 and we're left 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.

Let's proceed to step 9:
21 can be fit into 20 0 times, resulting in a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 1855468.0
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 10:
200 divided by 21 is 9 with a remainder of 11.
Write down 9 as next digit of the result. 
Result so far: 1855468.09
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.

Moving on to step 11:
21 goes into 110 5 times with a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 1855468.095
If we subtract 105 from 110, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 12:
21 can be fit into 50 2 times, resulting in a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 1855468.0952
The remainder is 8 after subtracting 42 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 13:
The number 21 fits into 80 3 times, leaving a remainder of 17.
Put 3 as the next digit of the answer. 
Result so far: 1855468.09523
If we take 63 away from 80, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Moving on to step 14:
21 goes into 170 8 times with a remainder of 2.
Put 8 as the next digit of the answer. 
Result so far: 1855468.095238
Subtracting 168 from 170 leaves us 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.

Step 15:
21 goes into 20 0 times with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 1855468.095238
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 16:
When dividing 200 by 21, we get 9 with a remainder of 11.
Use 9 as the next digit of our solution. 
Result so far: 1855468.09523809
The remainder is 11 after subtracting 189 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Our division results in 1855468.09523809 with a remaining 1.1e-08.