We divide 89566781 by 20
The aim is to understand the frequency of 20 in 89566781.

Step 1:
If we divide 8 by 20, we get 0 and a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Take the next digit (9) from the dividend and append it to 8, then repeat: 89 / 20

Step 2:
20 goes into 89 4 times with a remainder of 9.
Write down 4 as next digit of the result. 
Result so far: 4.0
Deduct 80 from 89 and we're left with 9.
Append the next digit (5) from the dividend to 9 and continue with: 95 / 20

Advancing to step 3:
When dividing 95 by 20, we get 4 with a remainder of 15.
The number 4 becomes the next digit in our result. 
Result so far: 44.0
Subtract 80 from 95 to get 15.
Grab the next digit (6) from the dividend, add it to 15, then carry on: 156 / 20

Advancing to step 4:
20 can be fit into 156 7 times, resulting in a remainder of 16.
The next digit of our result is 7. 
Result so far: 447.0
Subtract 140 from 156 to get 16.
Take the next digit (6) from the dividend and append it to 16, then repeat: 166 / 20

Let's proceed to step 5:
20 goes into 166 8 times with a remainder of 6.
Write down 8 as next digit of the result. 
Result so far: 4478.0
Subtracting 160 from 166 leaves us with 6.
Append the next digit (7) from the dividend to 6 and continue with: 67 / 20

On to step 6:
20 can be fit into 67 3 times, resulting in a remainder of 7.
The number 3 becomes the next digit in our result. 
Result so far: 44783.0
If we take 60 away from 67, we end up with 7.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 20

Advancing to step 7:
When dividing 78 by 20, we get 3 with a remainder of 18.
Put 3 as the next digit of the answer. 
Result so far: 447833.0
If we subtract 60 from 78, we get 18.
Bring next digit (1) of the dividend behind the 18 and repeat the process: 181 / 20

On to step 8:
20 goes into 181 9 times with a remainder of 1.
Write down 9 as next digit of the result. 
Result so far: 4478339.0
If we take 180 away from 181, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 9:
20 goes into 10 0 times with a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 4478339.0
If we subtract 0 from 10, 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.

Step 10:
20 can be fit into 100 5 times, resulting in a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 4478339.05
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 11:
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: 4478339.05
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.

Going ahead to step 12:
When dividing 0 by 20, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 4478339.05
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.

After the division, we end up with 4478339.05 and a remainder of 0.0.