We look at the division of 321208 by 21 
We're looking to find how many times 21 goes into 321208.

On to step 1:
The number 21 fits into 3 0 times, leaving a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Include the next digit (2) from the dividend after 3, then repeat: 32 / 21

Going ahead to step 2:
32 divided by 21 is 1 with a remainder of 11.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 21 away from 32, we end up with 11.
Bring next digit (1) of the dividend behind the 11 and repeat the process: 111 / 21

Step 3:
When dividing 111 by 21, we get 5 with a remainder of 6.
Record the quotient 5 as the next digit in the result. 
Result so far: 15.0
The remainder is 6 after subtracting 105 from 111.
Fetch the next digit (2) from the dividend, attach it to 6 and continue: 62 / 21

Advancing to step 4:
If we divide 62 by 21, we get 2 and a remainder of 20.
Write down 2 as next digit of the result. 
Result so far: 152.0
If we subtract 42 from 62, we get 20.
Include the next digit (0) from the dividend after 20, then repeat: 200 / 21

Step 5:
200 divided by 21 is 9 with a remainder of 11.
Write down 9 as next digit of the result. 
Result so far: 1529.0
Subtracting 189 from 200 leaves us with 11.
Bring next digit (8) of the dividend behind the 11 and repeat the process: 118 / 21

Going ahead to step 6:
21 can be fit into 118 5 times, resulting in a remainder of 13.
Use 5 as the next digit of our solution. 
Result so far: 15295.0
If we subtract 105 from 118, we 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.

Advancing to step 7:
If we divide 130 by 21, we get 6 and a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 15295.6
The remainder is 4 after subtracting 126 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 8:
The number 21 fits into 40 1 times, leaving a remainder of 19.
Write down 1 as next digit of the result. 
Result so far: 15295.61
Deduct 21 from 40 and we're left 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.

Step 9:
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: 15295.619
The remainder is 1 after subtracting 189 from 190.
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 10:
The number 21 fits into 10 0 times, leaving a remainder of 10.
The next digit of our result is 0. 
Result so far: 15295.619
If we take 0 away from 10, we end up with 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 11:
21 can be fit into 100 4 times, resulting in a remainder of 16.
The next digit of our result is 4. 
Result so far: 15295.61904
Subtracting 84 from 100 leaves us 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.

Step 12:
21 goes into 160 7 times with a remainder of 13.
Record the quotient 7 as the next digit in the result. 
Result so far: 15295.619047
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.

Step 13:
The number 21 fits into 130 6 times, leaving a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 15295.6190476
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.

Going ahead to step 14:
40 divided by 21 is 1 with a remainder of 19.
Record the quotient 1 as the next digit in the result. 
Result so far: 15295.61904761
If we subtract 21 from 40, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

In conclusion, the division gives 15295.61904761 with a balance of 1.9e-08.