We look at the division of 328421 by 20 
We want to divide 328421 by 20.

Let's proceed to step 1:
3 divided by 20 is 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Grab the next digit (2) from the dividend, add it to 3, then carry on: 32 / 20

Going ahead to step 2:
20 can be fit into 32 1 times, resulting in a remainder of 12.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 20 from 32, we get 12.
Include the next digit (8) from the dividend after 12, then repeat: 128 / 20

Step 3:
When dividing 128 by 20, we get 6 with a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 16.0
If we subtract 120 from 128, we get 8.
Bring next digit (4) of the dividend behind the 8 and repeat the process: 84 / 20

On to step 4:
20 goes into 84 4 times with a remainder of 4.
Put 4 as the next digit of the answer. 
Result so far: 164.0
If we take 80 away from 84, we end up with 4.
Grab the next digit (2) from the dividend, add it to 4, then carry on: 42 / 20

Advancing to step 5:
20 goes into 42 2 times with a remainder of 2.
Record the quotient 2 as the next digit in the result. 
Result so far: 1642.0
If we subtract 40 from 42, we get 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 20

Moving on to step 6:
21 divided by 20 is 1 with a remainder of 1.
Use 1 as the next digit of our solution. 
Result so far: 16421.0
The remainder is 1 after subtracting 20 from 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 7:
If we divide 10 by 20, we get 0 and a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 16421.0
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.

Going ahead to step 8:
If we divide 100 by 20, we get 5 and a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 16421.05
If we take 100 away from 100, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 9:
20 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 16421.05
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 10:
0 divided by 20 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 16421.05
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

In conclusion, the division gives 16421.05 with a balance of 0.0.