Let's divide 375479 by 20
The aim is to understand the frequency of 20 in 375479.

On to step 1:
When dividing 3 by 20, we get 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Include the next digit (7) from the dividend after 3, then repeat: 37 / 20

Going ahead to step 2:
If we divide 37 by 20, we get 1 and a remainder of 17.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 17 after subtracting 20 from 37.
Grab the next digit (5) from the dividend, add it to 17, then carry on: 175 / 20

Let's proceed to step 3:
The number 20 fits into 175 8 times, leaving a remainder of 15.
Use 8 as the next digit of our solution. 
Result so far: 18.0
Subtracting 160 from 175 leaves us with 15.
Bring next digit (4) of the dividend behind the 15 and repeat the process: 154 / 20

Advancing to step 4:
154 divided by 20 is 7 with a remainder of 14.
The number 7 becomes the next digit in our result. 
Result so far: 187.0
If we take 140 away from 154, we end up with 14.
Take the next digit (7) from the dividend and append it to 14, then repeat: 147 / 20

Step 5:
20 can be fit into 147 7 times, resulting in a remainder of 7.
Write down 7 as next digit of the result. 
Result so far: 1877.0
Subtract 140 from 147 to get 7.
Fetch the next digit (9) from the dividend, attach it to 7 and continue: 79 / 20

Going ahead to step 6:
The number 20 fits into 79 3 times, leaving a remainder of 19.
The next digit of our result is 3. 
Result so far: 18773.0
If we subtract 60 from 79, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 7:
190 divided by 20 is 9 with a remainder of 10.
The next digit of our result is 9. 
Result so far: 18773.9
The remainder is 10 after subtracting 180 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to 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: 18773.95
Subtracting 100 from 100 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.

Moving on to step 9:
0 divided by 20 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 18773.95
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:
0 divided by 20 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 18773.95
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.

The final result is 18773.95 with a remainder of 0.0.