812875 ÷ 38 
The aim is to understand the frequency of 38 in 812875.

Moving on to step 1:
38 goes into 8 0 times with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Include the next digit (1) from the dividend after 8, then repeat: 81 / 38

Step 2:
The number 38 fits into 81 2 times, leaving a remainder of 5.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtracting 76 from 81 leaves us with 5.
Include the next digit (2) from the dividend after 5, then repeat: 52 / 38

Advancing to step 3:
The number 38 fits into 52 1 times, leaving a remainder of 14.
Write down 1 as next digit of the result. 
Result so far: 21.0
Subtracting 38 from 52 leaves us with 14.
Grab the next digit (8) from the dividend, add it to 14, then carry on: 148 / 38

Moving on to step 4:
148 divided by 38 is 3 with a remainder of 34.
Record the quotient 3 as the next digit in the result. 
Result so far: 213.0
The remainder is 34 after subtracting 114 from 148.
Append the next digit (7) from the dividend to 34 and continue with: 347 / 38

Going ahead to step 5:
38 can be fit into 347 9 times, resulting in a remainder of 5.
The number 9 becomes the next digit in our result. 
Result so far: 2139.0
Subtract 342 from 347 to get 5.
Append the next digit (5) from the dividend to 5 and continue with: 55 / 38

On to step 6:
38 goes into 55 1 times with a remainder of 17.
Write down 1 as next digit of the result. 
Result so far: 21391.0
Deduct 38 from 55 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 7:
170 divided by 38 is 4 with a remainder of 18.
Write down 4 as next digit of the result. 
Result so far: 21391.4
Deduct 152 from 170 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 8:
If we divide 180 by 38, we get 4 and a remainder of 28.
Record the quotient 4 as the next digit in the result. 
Result so far: 21391.44
The remainder is 28 after subtracting 152 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

The final outcome is 21391.44, with a leftover of 0.028.