We divide 691451 by 20
The aim is to understand the frequency of 20 in 691451.

Advancing to step 1:
20 goes into 6 0 times with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Include the next digit (9) from the dividend after 6, then repeat: 69 / 20

Step 2:
20 goes into 69 3 times with a remainder of 9.
Write down 3 as next digit of the result. 
Result so far: 3.0
Deduct 60 from 69 and we're left with 9.
Append the next digit (1) from the dividend to 9 and continue with: 91 / 20

On to step 3:
20 can be fit into 91 4 times, resulting in a remainder of 11.
The number 4 becomes the next digit in our result. 
Result so far: 34.0
Deduct 80 from 91 and we're left with 11.
Bring next digit (4) of the dividend behind the 11 and repeat the process: 114 / 20

Going ahead to step 4:
114 divided by 20 is 5 with a remainder of 14.
Record the quotient 5 as the next digit in the result. 
Result so far: 345.0
If we take 100 away from 114, we end up with 14.
Fetch the next digit (5) from the dividend, attach it to 14 and continue: 145 / 20

Let's proceed to step 5:
If we divide 145 by 20, we get 7 and a remainder of 5.
Record the quotient 7 as the next digit in the result. 
Result so far: 3457.0
Deduct 140 from 145 and we're left with 5.
Take the next digit (1) from the dividend and append it to 5, then repeat: 51 / 20

Moving on to step 6:
20 goes into 51 2 times with a remainder of 11.
Record the quotient 2 as the next digit in the result. 
Result so far: 34572.0
Subtracting 40 from 51 leaves us with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 7:
110 divided by 20 is 5 with a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 34572.5
If we take 100 away from 110, we end up 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.

On to step 8:
When dividing 100 by 20, we get 5 with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 34572.55
If we take 100 away from 100, 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 34572.55 with a remaining 0.0.