263874 ÷ 20 
The aim is to understand the frequency of 20 in 263874.

Moving on to step 1:
20 goes into 2 0 times with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Take the next digit (6) from the dividend and append it to 2, then repeat: 26 / 20

On to step 2:
When dividing 26 by 20, we get 1 with a remainder of 6.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 20 from 26 and we're left with 6.
Include the next digit (3) from the dividend after 6, then repeat: 63 / 20

Going ahead to step 3:
20 goes into 63 3 times with a remainder of 3.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
Subtract 60 from 63 to get 3.
Bring next digit (8) of the dividend behind the 3 and repeat the process: 38 / 20

Going ahead to step 4:
When dividing 38 by 20, we get 1 with a remainder of 18.
The number 1 becomes the next digit in our result. 
Result so far: 131.0
If we take 20 away from 38, we end up with 18.
Include the next digit (7) from the dividend after 18, then repeat: 187 / 20

Let's proceed to step 5:
187 divided by 20 is 9 with a remainder of 7.
The number 9 becomes the next digit in our result. 
Result so far: 1319.0
Deduct 180 from 187 and we're left with 7.
Grab the next digit (4) from the dividend, add it to 7, then carry on: 74 / 20

Advancing to step 6:
If we divide 74 by 20, we get 3 and a remainder of 14.
Write down 3 as next digit of the result. 
Result so far: 13193.0
Subtract 60 from 74 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 7:
20 can be fit into 140 7 times, resulting in a remainder of 0.
The next digit of our result is 7. 
Result so far: 13193.7
Subtract 140 from 140 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 8:
0 divided by 20 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 13193.7
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.

Step 9:
When dividing 0 by 20, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 13193.7
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.

The final result is 13193.7 with a remainder of 0.0.