We divide 381664 by 20
The aim is to understand the frequency of 20 in 381664.

Advancing to step 1:
The number 20 fits into 3 0 times, leaving a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Grab the next digit (8) from the dividend, add it to 3, then carry on: 38 / 20

Step 2:
38 divided by 20 is 1 with a remainder of 18.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 18 after subtracting 20 from 38.
Append the next digit (1) from the dividend to 18 and continue with: 181 / 20

Let's proceed to step 3:
20 goes into 181 9 times with a remainder of 1.
The next digit of our result is 9. 
Result so far: 19.0
Subtracting 180 from 181 leaves us with 1.
Take the next digit (6) from the dividend and append it to 1, then repeat: 16 / 20

Step 4:
The number 20 fits into 16 0 times, leaving a remainder of 16.
Record the quotient 0 as the next digit in the result. 
Result so far: 190.0
The remainder is 16 after subtracting 0 from 16.
Bring next digit (6) of the dividend behind the 16 and repeat the process: 166 / 20

Going ahead to step 5:
The number 20 fits into 166 8 times, leaving a remainder of 6.
Put 8 as the next digit of the answer. 
Result so far: 1908.0
If we subtract 160 from 166, we get 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 20

Advancing to step 6:
When dividing 64 by 20, we get 3 with a remainder of 4.
Use 3 as the next digit of our solution. 
Result so far: 19083.0
Subtract 60 from 64 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 7:
When dividing 40 by 20, we get 2 with a remainder of 0.
Write down 2 as next digit of the result. 
Result so far: 19083.2
Subtract 40 from 40 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.

Going ahead to step 8:
20 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 19083.2
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.

Advancing to step 9:
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: 19083.2
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.

The final outcome is 19083.2, with a leftover of 0.0.