We look at the division of 74879 by 20 
The aim is to understand the frequency of 20 in 74879.

On to step 1:
20 can be fit into 7 0 times, resulting in a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Grab the next digit (4) from the dividend, add it to 7, then carry on: 74 / 20

On to step 2:
If we divide 74 by 20, we get 3 and a remainder of 14.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we take 60 away from 74, we end up with 14.
Append the next digit (8) from the dividend to 14 and continue with: 148 / 20

Let's proceed to step 3:
148 divided by 20 is 7 with a remainder of 8.
The next digit of our result is 7. 
Result so far: 37.0
If we take 140 away from 148, we end up with 8.
Take the next digit (7) from the dividend and append it to 8, then repeat: 87 / 20

Advancing to step 4:
When dividing 87 by 20, we get 4 with a remainder of 7.
Write down 4 as next digit of the result. 
Result so far: 374.0
Subtracting 80 from 87 leaves us with 7.
Grab the next digit (9) from the dividend, add it to 7, then carry on: 79 / 20

Moving on to step 5:
20 can be fit into 79 3 times, resulting in a remainder of 19.
Write down 3 as next digit of the result. 
Result so far: 3743.0
Subtracting 60 from 79 leaves us with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Going ahead to step 6:
When dividing 190 by 20, we get 9 with a remainder of 10.
The number 9 becomes the next digit in our result. 
Result so far: 3743.9
Subtract 180 from 190 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 7:
When dividing 100 by 20, we get 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 3743.95
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.

On to step 8:
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: 3743.95
Subtracting 0 from 0 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.

Moving on to step 9:
20 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 3743.95
Subtracting 0 from 0 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.

Our division results in 3743.95 with a remaining 0.0.