Let's divide 384212 by 21
Let's see how many times 21 fits into 384212.

Going ahead to step 1:
21 goes into 3 0 times with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Include the next digit (8) from the dividend after 3, then repeat: 38 / 21

Going ahead to step 2:
21 can be fit into 38 1 times, resulting in a remainder of 17.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 21 from 38 to get 17.
Bring next digit (4) of the dividend behind the 17 and repeat the process: 174 / 21

Let's proceed to step 3:
21 can be fit into 174 8 times, resulting in a remainder of 6.
Use 8 as the next digit of our solution. 
Result so far: 18.0
Subtract 168 from 174 to get 6.
Bring next digit (2) of the dividend behind the 6 and repeat the process: 62 / 21

Step 4:
21 can be fit into 62 2 times, resulting in a remainder of 20.
Write down 2 as next digit of the result. 
Result so far: 182.0
If we take 42 away from 62, we end up with 20.
Take the next digit (1) from the dividend and append it to 20, then repeat: 201 / 21

On to step 5:
21 can be fit into 201 9 times, resulting in a remainder of 12.
The number 9 becomes the next digit in our result. 
Result so far: 1829.0
If we take 189 away from 201, we end up with 12.
Append the next digit (2) from the dividend to 12 and continue with: 122 / 21

Let's proceed to step 6:
If we divide 122 by 21, we get 5 and a remainder of 17.
Put 5 as the next digit of the answer. 
Result so far: 18295.0
The remainder is 17 after subtracting 105 from 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 7:
21 can be fit into 170 8 times, resulting in a remainder of 2.
The next digit of our result is 8. 
Result so far: 18295.8
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.

Let's proceed to step 8:
The number 21 fits into 20 0 times, leaving a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 18295.8
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.

Advancing to step 9:
When dividing 200 by 21, we get 9 with a remainder of 11.
Write down 9 as next digit of the result. 
Result so far: 18295.809
Deduct 189 from 200 and we're left 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.

Advancing to step 10:
The number 21 fits into 110 5 times, leaving a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 18295.8095
Subtract 105 from 110 to 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.

Step 11:
The number 21 fits into 50 2 times, leaving a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 18295.80952
Subtract 42 from 50 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 12:
21 goes into 80 3 times with a remainder of 17.
Put 3 as the next digit of the answer. 
Result so far: 18295.809523
If we subtract 63 from 80, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 13:
170 divided by 21 is 8 with a remainder of 2.
Put 8 as the next digit of the answer. 
Result so far: 18295.8095238
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.

On to step 14:
21 goes into 20 0 times with a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 18295.8095238
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The final outcome is 18295.8095238, with a leftover of 2e-08.