338821 ÷ 20 
Our goal is to divide 338821 by 20.

Step 1:
20 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.
Bring next digit (3) of the dividend behind the 3 and repeat the process: 33 / 20

On to step 2:
The number 20 fits into 33 1 times, leaving a remainder of 13.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 20 from 33, we get 13.
Grab the next digit (8) from the dividend, add it to 13, then carry on: 138 / 20

Going ahead to step 3:
The number 20 fits into 138 6 times, leaving a remainder of 18.
Put 6 as the next digit of the answer. 
Result so far: 16.0
Subtract 120 from 138 to get 18.
Fetch the next digit (8) from the dividend, attach it to 18 and continue: 188 / 20

Advancing to step 4:
20 goes into 188 9 times with a remainder of 8.
Use 9 as the next digit of our solution. 
Result so far: 169.0
Subtracting 180 from 188 leaves us with 8.
Include the next digit (2) from the dividend after 8, then repeat: 82 / 20

Moving on to step 5:
20 goes into 82 4 times with a remainder of 2.
Record the quotient 4 as the next digit in the result. 
Result so far: 1694.0
Subtract 80 from 82 to get 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 20

Let's proceed to step 6:
The number 20 fits into 21 1 times, leaving a remainder of 1.
Record the quotient 1 as the next digit in the result. 
Result so far: 16941.0
If we take 20 away from 21, 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.

Going ahead to step 7:
20 can be fit into 10 0 times, resulting in a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 16941.0
Subtracting 0 from 10 leaves us 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.

On to step 8:
If we divide 100 by 20, we get 5 and a remainder of 0.
The next digit of our result is 5. 
Result so far: 16941.05
If we subtract 100 from 100, 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.

Moving on to step 9:
If we divide 0 by 20, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 16941.05
Subtract 0 from 0 to 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.

Let's proceed to step 10:
If we divide 0 by 20, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 16941.05
Subtract 0 from 0 to 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.

After the division, we end up with 16941.05 and a remainder of 0.0.