Let's divide 535212 by 20
The aim is to understand the frequency of 20 in 535212.

Let's proceed to step 1:
5 divided by 20 is 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Append the next digit (3) from the dividend to 5 and continue with: 53 / 20

On to step 2:
If we divide 53 by 20, we get 2 and a remainder of 13.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtract 40 from 53 to get 13.
Grab the next digit (5) from the dividend, add it to 13, then carry on: 135 / 20

Moving on to step 3:
When dividing 135 by 20, we get 6 with a remainder of 15.
Write down 6 as next digit of the result. 
Result so far: 26.0
Subtracting 120 from 135 leaves us with 15.
Take the next digit (2) from the dividend and append it to 15, then repeat: 152 / 20

Step 4:
20 can be fit into 152 7 times, resulting in a remainder of 12.
Write down 7 as next digit of the result. 
Result so far: 267.0
Deduct 140 from 152 and we're left with 12.
Grab the next digit (1) from the dividend, add it to 12, then carry on: 121 / 20

On to step 5:
When dividing 121 by 20, we get 6 with a remainder of 1.
Use 6 as the next digit of our solution. 
Result so far: 2676.0
Subtracting 120 from 121 leaves us with 1.
Fetch the next digit (2) from the dividend, attach it to 1 and continue: 12 / 20

Let's proceed to step 6:
If we divide 12 by 20, we get 0 and a remainder of 12.
The number 0 becomes the next digit in our result. 
Result so far: 26760.0
Subtract 0 from 12 to get 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.
Write down 6 as next digit of the result. 
Result so far: 26760.6
If we take 120 away from 120, 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 8:
0 divided by 20 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 26760.6
Subtract 0 from 0 to 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 9:
0 divided by 20 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 26760.6
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.

After the division, we end up with 26760.6 and a remainder of 0.0.