Let's divide 753869 by 20
The aim is to understand the frequency of 20 in 753869.

Step 1:
7 divided by 20 is 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Include the next digit (5) from the dividend after 7, then repeat: 75 / 20

Let's proceed to step 2:
The number 20 fits into 75 3 times, leaving a remainder of 15.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we subtract 60 from 75, we get 15.
Fetch the next digit (3) from the dividend, attach it to 15 and continue: 153 / 20

On to step 3:
20 can be fit into 153 7 times, resulting in a remainder of 13.
The next digit of our result is 7. 
Result so far: 37.0
Subtracting 140 from 153 leaves us with 13.
Append the next digit (8) from the dividend to 13 and continue with: 138 / 20

Moving on to step 4:
20 goes into 138 6 times with a remainder of 18.
Record the quotient 6 as the next digit in the result. 
Result so far: 376.0
Subtracting 120 from 138 leaves us with 18.
Bring next digit (6) of the dividend behind the 18 and repeat the process: 186 / 20

On to step 5:
When dividing 186 by 20, we get 9 with a remainder of 6.
The next digit of our result is 9. 
Result so far: 3769.0
Subtract 180 from 186 to get 6.
Append the next digit (9) from the dividend to 6 and continue with: 69 / 20

Let's proceed to step 6:
20 goes into 69 3 times with a remainder of 9.
The next digit of our result is 3. 
Result so far: 37693.0
Subtracting 60 from 69 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 7:
When dividing 90 by 20, we get 4 with a remainder of 10.
Use 4 as the next digit of our solution. 
Result so far: 37693.4
Deduct 80 from 90 and we're left with 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:
20 can be fit into 100 5 times, resulting in a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 37693.45
Subtract 100 from 100 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.

Step 9:
The number 20 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 37693.45
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.

Let's proceed to step 10:
When dividing 0 by 20, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 37693.45
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.

After the division, we end up with 37693.45 and a remainder of 0.0.