Let's divide 18646101 by 20
The aim is to understand the frequency of 20 in 18646101.

Step 1:
If we divide 1 by 20, we get 0 and a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Append the next digit (8) from the dividend to 1 and continue with: 18 / 20

Going ahead to step 2:
20 goes into 18 0 times with a remainder of 18.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 18 after subtracting 0 from 18.
Append the next digit (6) from the dividend to 18 and continue with: 186 / 20

Moving on to step 3:
186 divided by 20 is 9 with a remainder of 6.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
If we subtract 180 from 186, we get 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 20

Step 4:
20 can be fit into 64 3 times, resulting in a remainder of 4.
Record the quotient 3 as the next digit in the result. 
Result so far: 93.0
If we subtract 60 from 64, we get 4.
Include the next digit (6) from the dividend after 4, then repeat: 46 / 20

Moving on to step 5:
When dividing 46 by 20, we get 2 with a remainder of 6.
Use 2 as the next digit of our solution. 
Result so far: 932.0
Deduct 40 from 46 and we're left with 6.
Fetch the next digit (1) from the dividend, attach it to 6 and continue: 61 / 20

Step 6:
61 divided by 20 is 3 with a remainder of 1.
Record the quotient 3 as the next digit in the result. 
Result so far: 9323.0
Subtracting 60 from 61 leaves us with 1.
Include the next digit (0) from the dividend after 1, then repeat: 10 / 20

Moving on to step 7:
When dividing 10 by 20, we get 0 with a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 93230.0
The remainder is 10 after subtracting 0 from 10.
Grab the next digit (1) from the dividend, add it to 10, then carry on: 101 / 20

Step 8:
20 goes into 101 5 times with a remainder of 1.
The next digit of our result is 5. 
Result so far: 932305.0
Subtracting 100 from 101 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 9:
20 goes into 10 0 times with a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 932305.0
If we subtract 0 from 10, 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.

Advancing to step 10:
If we divide 100 by 20, we get 5 and a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 932305.05
If we take 100 away from 100, 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.

Going ahead to step 11:
20 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 932305.05
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.

On to step 12:
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: 932305.05
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.

The quotient of the division is 932305.05, and the remainder is 0.0.