We're dividing 715249 by 20 
The aim is to understand the frequency of 20 in 715249.

Advancing to step 1:
20 goes into 7 0 times with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Take the next digit (1) from the dividend and append it to 7, then repeat: 71 / 20

Going ahead to step 2:
If we divide 71 by 20, we get 3 and a remainder of 11.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we take 60 away from 71, we end up with 11.
Append the next digit (5) from the dividend to 11 and continue with: 115 / 20

Step 3:
The number 20 fits into 115 5 times, leaving a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 35.0
Deduct 100 from 115 and we're left with 15.
Append the next digit (2) from the dividend to 15 and continue with: 152 / 20

On to step 4:
20 goes into 152 7 times with a remainder of 12.
The number 7 becomes the next digit in our result. 
Result so far: 357.0
Subtracting 140 from 152 leaves us with 12.
Take the next digit (4) from the dividend and append it to 12, then repeat: 124 / 20

Let's proceed to step 5:
If we divide 124 by 20, we get 6 and a remainder of 4.
Put 6 as the next digit of the answer. 
Result so far: 3576.0
If we take 120 away from 124, we end up with 4.
Append the next digit (9) from the dividend to 4 and continue with: 49 / 20

Going ahead to step 6:
When dividing 49 by 20, we get 2 with a remainder of 9.
Use 2 as the next digit of our solution. 
Result so far: 35762.0
If we take 40 away from 49, we end up 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.

On to step 7:
90 divided by 20 is 4 with a remainder of 10.
Record the quotient 4 as the next digit in the result. 
Result so far: 35762.4
The remainder is 10 after subtracting 80 from 90.
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:
When dividing 100 by 20, we get 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 35762.45
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.

Advancing to 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: 35762.45
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.

Step 10:
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: 35762.45
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.

Our division results in 35762.45 with a remaining 0.0.