We're dividing 338987 by 20 
The aim is to understand the frequency of 20 in 338987.

Advancing to step 1:
20 goes into 3 0 times with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Include the next digit (3) from the dividend after 3, then repeat: 33 / 20

Step 2:
If we divide 33 by 20, we get 1 and a remainder of 13.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 20 from 33 to get 13.
Append the next digit (8) from the dividend to 13 and continue with: 138 / 20

Step 3:
20 goes into 138 6 times with a remainder of 18.
Use 6 as the next digit of our solution. 
Result so far: 16.0
Subtracting 120 from 138 leaves us with 18.
Include the next digit (9) from the dividend after 18, then repeat: 189 / 20

Advancing to step 4:
The number 20 fits into 189 9 times, leaving a remainder of 9.
Put 9 as the next digit of the answer. 
Result so far: 169.0
If we subtract 180 from 189, we get 9.
Grab the next digit (8) from the dividend, add it to 9, then carry on: 98 / 20

Let's proceed to step 5:
If we divide 98 by 20, we get 4 and a remainder of 18.
Record the quotient 4 as the next digit in the result. 
Result so far: 1694.0
Subtract 80 from 98 to get 18.
Fetch the next digit (7) from the dividend, attach it to 18 and continue: 187 / 20

Moving on to step 6:
If we divide 187 by 20, we get 9 and a remainder of 7.
Put 9 as the next digit of the answer. 
Result so far: 16949.0
Deduct 180 from 187 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Moving on to step 7:
20 goes into 70 3 times with a remainder of 10.
Write down 3 as next digit of the result. 
Result so far: 16949.3
The remainder is 10 after subtracting 60 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 8:
20 goes into 100 5 times with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 16949.35
Subtract 100 from 100 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.

Step 9:
20 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 16949.35
If we take 0 away from 0, 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.

Going ahead 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: 16949.35
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.

In conclusion, the division gives 16949.35 with a balance of 0.0.