We divide 642563 by 20
The aim is to understand the frequency of 20 in 642563.

Let's proceed to step 1:
If we divide 6 by 20, we get 0 and a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 20

Step 2:
The number 20 fits into 64 3 times, leaving a remainder of 4.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Deduct 60 from 64 and we're left with 4.
Append the next digit (2) from the dividend to 4 and continue with: 42 / 20

Let's proceed to step 3:
20 goes into 42 2 times with a remainder of 2.
The number 2 becomes the next digit in our result. 
Result so far: 32.0
If we take 40 away from 42, we end up with 2.
Include the next digit (5) from the dividend after 2, then repeat: 25 / 20

On to step 4:
If we divide 25 by 20, we get 1 and a remainder of 5.
The next digit of our result is 1. 
Result so far: 321.0
Deduct 20 from 25 and we're left with 5.
Take the next digit (6) from the dividend and append it to 5, then repeat: 56 / 20

Going ahead to step 5:
When dividing 56 by 20, we get 2 with a remainder of 16.
Put 2 as the next digit of the answer. 
Result so far: 3212.0
If we take 40 away from 56, we end up with 16.
Include the next digit (3) from the dividend after 16, then repeat: 163 / 20

Let's proceed to step 6:
20 goes into 163 8 times with a remainder of 3.
Use 8 as the next digit of our solution. 
Result so far: 32128.0
If we take 160 away from 163, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 7:
30 divided by 20 is 1 with a remainder of 10.
The next digit of our result is 1. 
Result so far: 32128.1
If we subtract 20 from 30, we 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 8:
The number 20 fits into 100 5 times, leaving a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 32128.15
Subtracting 100 from 100 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.

Advancing to step 9:
When dividing 0 by 20, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 32128.15
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.

Let's proceed to step 10:
If we divide 0 by 20, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 32128.15
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.

Our division results in 32128.15 with a remaining 0.0.