875647 ÷ 20 
The aim is to understand the frequency of 20 in 875647.

Step 1:
20 goes into 8 0 times with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Fetch the next digit (7) from the dividend, attach it to 8 and continue: 87 / 20

Going ahead to step 2:
20 goes into 87 4 times with a remainder of 7.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
If we take 80 away from 87, we end up with 7.
Grab the next digit (5) from the dividend, add it to 7, then carry on: 75 / 20

Let's proceed to step 3:
75 divided by 20 is 3 with a remainder of 15.
Record the quotient 3 as the next digit in the result. 
Result so far: 43.0
Subtract 60 from 75 to get 15.
Take the next digit (6) from the dividend and append it to 15, then repeat: 156 / 20

Advancing to step 4:
The number 20 fits into 156 7 times, leaving a remainder of 16.
Write down 7 as next digit of the result. 
Result so far: 437.0
If we subtract 140 from 156, we get 16.
Take the next digit (4) from the dividend and append it to 16, then repeat: 164 / 20

Advancing to step 5:
The number 20 fits into 164 8 times, leaving a remainder of 4.
Write down 8 as next digit of the result. 
Result so far: 4378.0
If we take 160 away from 164, we end up with 4.
Include the next digit (7) from the dividend after 4, then repeat: 47 / 20

Let's proceed to step 6:
If we divide 47 by 20, we get 2 and a remainder of 7.
The next digit of our result is 2. 
Result so far: 43782.0
The remainder is 7 after subtracting 40 from 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Step 7:
20 goes into 70 3 times with a remainder of 10.
Record the quotient 3 as the next digit in the result. 
Result so far: 43782.3
If we take 60 away from 70, 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.

Going ahead to step 8:
The number 20 fits into 100 5 times, leaving a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 43782.35
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.

Let's proceed to step 9:
If we divide 0 by 20, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 43782.35
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.

Going ahead to step 10:
If we divide 0 by 20, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 43782.35
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.

The final result is 43782.35 with a remainder of 0.0.