We're dividing 77589444 by 20 
The aim is to understand the frequency of 20 in 77589444.

Moving on to step 1:
When dividing 7 by 20, we get 0 with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Fetch the next digit (7) from the dividend, attach it to 7 and continue: 77 / 20

Advancing to step 2:
The number 20 fits into 77 3 times, leaving a remainder of 17.
Put 3 as the next digit of the answer. 
Result so far: 3.0
The remainder is 17 after subtracting 60 from 77.
Bring next digit (5) of the dividend behind the 17 and repeat the process: 175 / 20

Moving on to step 3:
175 divided by 20 is 8 with a remainder of 15.
Record the quotient 8 as the next digit in the result. 
Result so far: 38.0
Subtract 160 from 175 to get 15.
Take the next digit (8) from the dividend and append it to 15, then repeat: 158 / 20

Step 4:
When dividing 158 by 20, we get 7 with a remainder of 18.
Write down 7 as next digit of the result. 
Result so far: 387.0
If we subtract 140 from 158, we get 18.
Append the next digit (9) from the dividend to 18 and continue with: 189 / 20

Step 5:
When dividing 189 by 20, we get 9 with a remainder of 9.
The next digit of our result is 9. 
Result so far: 3879.0
The remainder is 9 after subtracting 180 from 189.
Include the next digit (4) from the dividend after 9, then repeat: 94 / 20

Going ahead to step 6:
When dividing 94 by 20, we get 4 with a remainder of 14.
Record the quotient 4 as the next digit in the result. 
Result so far: 38794.0
If we take 80 away from 94, we end up with 14.
Append the next digit (4) from the dividend to 14 and continue with: 144 / 20

Going ahead to step 7:
When dividing 144 by 20, we get 7 with a remainder of 4.
The number 7 becomes the next digit in our result. 
Result so far: 387947.0
Deduct 140 from 144 and we're left with 4.
Take the next digit (4) from the dividend and append it to 4, then repeat: 44 / 20

Step 8:
44 divided by 20 is 2 with a remainder of 4.
The next digit of our result is 2. 
Result so far: 3879472.0
Subtracting 40 from 44 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 9:
When dividing 40 by 20, we get 2 with a remainder of 0.
The next digit of our result is 2. 
Result so far: 3879472.2
If we subtract 40 from 40, 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.

Advancing to step 10:
When dividing 0 by 20, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 3879472.2
Subtract 0 from 0 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.

Let's proceed to step 11:
If we divide 0 by 20, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 3879472.2
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.

Our division results in 3879472.2 with a remaining 0.0.