We're dividing 772415 by 20 
The aim is to understand the frequency of 20 in 772415.

Step 1:
When dividing 7 by 20, we get 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Bring next digit (7) of the dividend behind the 7 and repeat the process: 77 / 20

Let's proceed to step 2:
The number 20 fits into 77 3 times, leaving a remainder of 17.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Subtracting 60 from 77 leaves us with 17.
Append the next digit (2) from the dividend to 17 and continue with: 172 / 20

Let's proceed to step 3:
20 can be fit into 172 8 times, resulting in a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 38.0
Subtracting 160 from 172 leaves us with 12.
Grab the next digit (4) from the dividend, add it to 12, then carry on: 124 / 20

Advancing to step 4:
When dividing 124 by 20, we get 6 with a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 386.0
The remainder is 4 after subtracting 120 from 124.
Grab the next digit (1) from the dividend, add it to 4, then carry on: 41 / 20

Advancing to step 5:
If we divide 41 by 20, we get 2 and a remainder of 1.
Put 2 as the next digit of the answer. 
Result so far: 3862.0
If we take 40 away from 41, we end up with 1.
Fetch the next digit (5) from the dividend, attach it to 1 and continue: 15 / 20

Moving on to step 6:
20 goes into 15 0 times with a remainder of 15.
Record the quotient 0 as the next digit in the result. 
Result so far: 38620.0
If we subtract 0 from 15, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 7:
150 divided by 20 is 7 with a remainder of 10.
The next digit of our result is 7. 
Result so far: 38620.7
If we take 140 away from 150, 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.

Moving on to step 8:
20 can be fit into 100 5 times, resulting in a remainder of 0.
The next digit of our result is 5. 
Result so far: 38620.75
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.

Advancing to step 9:
The number 20 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 38620.75
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.

On to step 10:
20 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 38620.75
Subtracting 0 from 0 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.

After the division, we end up with 38620.75 and a remainder of 0.0.