621212 ÷ 20 
The aim is to understand the frequency of 20 in 621212.

Advancing to step 1:
If we divide 6 by 20, we get 0 and a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Include the next digit (2) from the dividend after 6, then repeat: 62 / 20

Step 2:
If we divide 62 by 20, we get 3 and a remainder of 2.
Write down 3 as next digit of the result. 
Result so far: 3.0
If we subtract 60 from 62, we get 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 20

Step 3:
If we divide 21 by 20, we get 1 and a remainder of 1.
Record the quotient 1 as the next digit in the result. 
Result so far: 31.0
If we subtract 20 from 21, we get 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 20

Going ahead to step 4:
20 goes into 12 0 times with a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 310.0
Deduct 0 from 12 and we're left with 12.
Take the next digit (1) from the dividend and append it to 12, then repeat: 121 / 20

Step 5:
The number 20 fits into 121 6 times, leaving a remainder of 1.
Write down 6 as next digit of the result. 
Result so far: 3106.0
The remainder is 1 after subtracting 120 from 121.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 20

Advancing to step 6:
20 can be fit into 12 0 times, resulting in a remainder of 12.
Use 0 as the next digit of our solution. 
Result so far: 31060.0
If we take 0 away from 12, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 7:
When dividing 120 by 20, we get 6 with a remainder of 0.
The next digit of our result is 6. 
Result so far: 31060.6
If we subtract 120 from 120, 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.

Let's proceed to step 8:
20 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 31060.6
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.

On to step 9:
When dividing 0 by 20, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 31060.6
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.

In conclusion, the division gives 31060.6 with a balance of 0.0.