243496 divided by 20 
The aim is to understand the frequency of 20 in 243496.

Let's proceed to step 1:
If we divide 2 by 20, we get 0 and a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Fetch the next digit (4) from the dividend, attach it to 2 and continue: 24 / 20

On to step 2:
When dividing 24 by 20, we get 1 with a remainder of 4.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 20 from 24, we get 4.
Take the next digit (3) from the dividend and append it to 4, then repeat: 43 / 20

Moving on to step 3:
When dividing 43 by 20, we get 2 with a remainder of 3.
Write down 2 as next digit of the result. 
Result so far: 12.0
The remainder is 3 after subtracting 40 from 43.
Take the next digit (4) from the dividend and append it to 3, then repeat: 34 / 20

Going ahead to step 4:
When dividing 34 by 20, we get 1 with a remainder of 14.
The next digit of our result is 1. 
Result so far: 121.0
Deduct 20 from 34 and we're left with 14.
Take the next digit (9) from the dividend and append it to 14, then repeat: 149 / 20

Step 5:
20 can be fit into 149 7 times, resulting in a remainder of 9.
The number 7 becomes the next digit in our result. 
Result so far: 1217.0
Deduct 140 from 149 and we're left with 9.
Grab the next digit (6) from the dividend, add it to 9, then carry on: 96 / 20

Step 6:
20 goes into 96 4 times with a remainder of 16.
The next digit of our result is 4. 
Result so far: 12174.0
If we take 80 away from 96, we end up 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.

Advancing to step 7:
20 can be fit into 160 8 times, resulting in a remainder of 0.
The number 8 becomes the next digit in our result. 
Result so far: 12174.8
Subtracting 160 from 160 leaves us 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.

Step 8:
20 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 12174.8
The remainder is 0 after subtracting 0 from 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:
The number 20 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 12174.8
Deduct 0 from 0 and we're left 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.

After the division, we end up with 12174.8 and a remainder of 0.0.