Let's divide 687217 by 20
The aim is to understand the frequency of 20 in 687217.

Let's proceed to step 1:
If we divide 6 by 20, we get 0 and a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Append the next digit (8) from the dividend to 6 and continue with: 68 / 20

On to step 2:
20 can be fit into 68 3 times, resulting in a remainder of 8.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Subtract 60 from 68 to get 8.
Append the next digit (7) from the dividend to 8 and continue with: 87 / 20

Advancing to step 3:
If we divide 87 by 20, we get 4 and a remainder of 7.
The next digit of our result is 4. 
Result so far: 34.0
Deduct 80 from 87 and we're left with 7.
Include the next digit (2) from the dividend after 7, then repeat: 72 / 20

Step 4:
If we divide 72 by 20, we get 3 and a remainder of 12.
Record the quotient 3 as the next digit in the result. 
Result so far: 343.0
Subtract 60 from 72 to get 12.
Fetch the next digit (1) from the dividend, attach it to 12 and continue: 121 / 20

Let's proceed to step 5:
20 goes into 121 6 times with a remainder of 1.
The next digit of our result is 6. 
Result so far: 3436.0
Subtracting 120 from 121 leaves us with 1.
Grab the next digit (7) from the dividend, add it to 1, then carry on: 17 / 20

Moving on to step 6:
The number 20 fits into 17 0 times, leaving a remainder of 17.
Record the quotient 0 as the next digit in the result. 
Result so far: 34360.0
The remainder is 17 after subtracting 0 from 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Advancing to step 7:
20 can be fit into 170 8 times, resulting in a remainder of 10.
Put 8 as the next digit of the answer. 
Result so far: 34360.8
If we subtract 160 from 170, we get 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:
100 divided by 20 is 5 with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 34360.85
Subtracting 100 from 100 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.

Step 9:
When dividing 0 by 20, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 34360.85
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.

Let's proceed to step 10:
20 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 34360.85
If we subtract 0 from 0, 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.

Our division results in 34360.85 with a remaining 0.0.