We look at the division of 87202 by 20 
The aim is to understand the frequency of 20 in 87202.

Moving on to step 1:
If we divide 8 by 20, we get 0 and a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Grab the next digit (7) from the dividend, add it to 8, then carry on: 87 / 20

Moving on to step 2:
20 goes into 87 4 times with a remainder of 7.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Subtract 80 from 87 to get 7.
Include the next digit (2) from the dividend after 7, then repeat: 72 / 20

Step 3:
72 divided by 20 is 3 with a remainder of 12.
The number 3 becomes the next digit in our result. 
Result so far: 43.0
Deduct 60 from 72 and we're left with 12.
Take the next digit (0) from the dividend and append it to 12, then repeat: 120 / 20

Moving on to step 4:
The number 20 fits into 120 6 times, leaving a remainder of 0.
Use 6 as the next digit of our solution. 
Result so far: 436.0
Subtracting 120 from 120 leaves us with 0.
Take the next digit (2) from the dividend and append it to 0, then repeat: 2 / 20

Moving on to step 5:
20 goes into 2 0 times with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 4360.0
Subtract 0 from 2 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 6:
The number 20 fits into 20 1 times, leaving a remainder of 0.
Use 1 as the next digit of our solution. 
Result so far: 4360.1
Subtracting 20 from 20 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.

Let's proceed to step 7:
When dividing 0 by 20, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 4360.1
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.

Going ahead to step 8:
The number 20 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 4360.1
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.

The final result is 4360.1 with a remainder of 0.0.