We divide 812188 by 20
The aim is to understand the frequency of 20 in 812188.

Moving on to step 1:
When dividing 8 by 20, we get 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Append the next digit (1) from the dividend to 8 and continue with: 81 / 20

Going ahead to step 2:
81 divided by 20 is 4 with a remainder of 1.
Put 4 as the next digit of the answer. 
Result so far: 4.0
If we take 80 away from 81, we end up with 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 20

Step 3:
If we divide 12 by 20, we get 0 and a remainder of 12.
Use 0 as the next digit of our solution. 
Result so far: 40.0
Subtracting 0 from 12 leaves us with 12.
Append the next digit (1) from the dividend to 12 and continue with: 121 / 20

On to step 4:
20 can be fit into 121 6 times, resulting in a remainder of 1.
Put 6 as the next digit of the answer. 
Result so far: 406.0
Deduct 120 from 121 and we're left with 1.
Take the next digit (8) from the dividend and append it to 1, then repeat: 18 / 20

Advancing to step 5:
If we divide 18 by 20, we get 0 and a remainder of 18.
Use 0 as the next digit of our solution. 
Result so far: 4060.0
Deduct 0 from 18 and we're left with 18.
Bring next digit (8) of the dividend behind the 18 and repeat the process: 188 / 20

Moving on to step 6:
The number 20 fits into 188 9 times, leaving a remainder of 8.
Record the quotient 9 as the next digit in the result. 
Result so far: 40609.0
Subtract 180 from 188 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 7:
20 can be fit into 80 4 times, resulting in a remainder of 0.
Put 4 as the next digit of the answer. 
Result so far: 40609.4
Subtracting 80 from 80 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 8:
When dividing 0 by 20, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 40609.4
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.

Advancing to step 9:
0 divided by 20 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 40609.4
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 40609.4 and a remainder of 0.0.