We look at the division of 793357 by 20 
The aim is to understand the frequency of 20 in 793357.

Step 1:
20 can be fit into 7 0 times, resulting in a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Bring next digit (9) of the dividend behind the 7 and repeat the process: 79 / 20

Step 2:
When dividing 79 by 20, we get 3 with a remainder of 19.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we take 60 away from 79, we end up with 19.
Bring next digit (3) of the dividend behind the 19 and repeat the process: 193 / 20

Moving on to step 3:
20 goes into 193 9 times with a remainder of 13.
Record the quotient 9 as the next digit in the result. 
Result so far: 39.0
The remainder is 13 after subtracting 180 from 193.
Bring next digit (3) of the dividend behind the 13 and repeat the process: 133 / 20

Moving on to step 4:
If we divide 133 by 20, we get 6 and a remainder of 13.
The number 6 becomes the next digit in our result. 
Result so far: 396.0
If we subtract 120 from 133, we get 13.
Take the next digit (5) from the dividend and append it to 13, then repeat: 135 / 20

Going ahead to step 5:
20 goes into 135 6 times with a remainder of 15.
Write down 6 as next digit of the result. 
Result so far: 3966.0
Deduct 120 from 135 and we're left with 15.
Grab the next digit (7) from the dividend, add it to 15, then carry on: 157 / 20

Step 6:
20 can be fit into 157 7 times, resulting in a remainder of 17.
Put 7 as the next digit of the answer. 
Result so far: 39667.0
The remainder is 17 after subtracting 140 from 157.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

On to step 7:
170 divided by 20 is 8 with a remainder of 10.
The next digit of our result is 8. 
Result so far: 39667.8
If we subtract 160 from 170, 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 8:
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: 39667.85
The remainder is 0 after subtracting 100 from 100.
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.
Use 0 as the next digit of our solution. 
Result so far: 39667.85
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.

Moving 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: 39667.85
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.

Our division results in 39667.85 with a remaining 0.0.