We look at the division of 778212 by 20 
The aim is to understand the frequency of 20 in 778212.

Going ahead to step 1:
The number 20 fits into 7 0 times, leaving a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Include the next digit (7) from the dividend after 7, then repeat: 77 / 20

Step 2:
If we divide 77 by 20, we get 3 and a remainder of 17.
Write down 3 as next digit of the result. 
Result so far: 3.0
If we subtract 60 from 77, we get 17.
Include the next digit (8) from the dividend after 17, then repeat: 178 / 20

On to step 3:
178 divided by 20 is 8 with a remainder of 18.
Use 8 as the next digit of our solution. 
Result so far: 38.0
If we take 160 away from 178, we end up with 18.
Take the next digit (2) from the dividend and append it to 18, then repeat: 182 / 20

Moving on to step 4:
182 divided by 20 is 9 with a remainder of 2.
The number 9 becomes the next digit in our result. 
Result so far: 389.0
If we take 180 away from 182, we end up with 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 20

Step 5:
When dividing 21 by 20, we get 1 with a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 3891.0
Deduct 20 from 21 and we're left with 1.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 20

Moving on to step 6:
20 can be fit into 12 0 times, resulting in a remainder of 12.
The number 0 becomes the next digit in our result. 
Result so far: 38910.0
If we subtract 0 from 12, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 7:
120 divided by 20 is 6 with a remainder of 0.
The next digit of our result is 6. 
Result so far: 38910.6
Subtracting 120 from 120 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 8:
20 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 38910.6
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.

On to step 9:
The number 20 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 38910.6
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.

The final result is 38910.6 with a remainder of 0.0.