We look at the division of 814129 by 75 
The aim is to understand the frequency of 75 in 814129.

Step 1:
75 can be fit into 8 0 times, resulting in a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 75

Step 2:
81 divided by 75 is 1 with a remainder of 6.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 75 from 81 and we're left with 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 75

Advancing to step 3:
The number 75 fits into 64 0 times, leaving a remainder of 64.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
Subtracting 0 from 64 leaves us with 64.
Grab the next digit (1) from the dividend, add it to 64, then carry on: 641 / 75

Step 4:
75 goes into 641 8 times with a remainder of 41.
The next digit of our result is 8. 
Result so far: 108.0
Deduct 600 from 641 and we're left with 41.
Include the next digit (2) from the dividend after 41, then repeat: 412 / 75

Step 5:
When dividing 412 by 75, we get 5 with a remainder of 37.
Write down 5 as next digit of the result. 
Result so far: 1085.0
Subtract 375 from 412 to get 37.
Append the next digit (9) from the dividend to 37 and continue with: 379 / 75

Moving on to step 6:
75 can be fit into 379 5 times, resulting in a remainder of 4.
The next digit of our result is 5. 
Result so far: 10855.0
If we take 375 away from 379, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 7:
75 goes into 40 0 times with a remainder of 40.
The next digit of our result is 0. 
Result so far: 10855.0
Subtract 0 from 40 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 8:
75 can be fit into 400 5 times, resulting in a remainder of 25.
Record the quotient 5 as the next digit in the result. 
Result so far: 10855.05
Subtracting 375 from 400 leaves us with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 9:
The number 75 fits into 250 3 times, leaving a remainder of 25.
The next digit of our result is 3. 
Result so far: 10855.053
Subtracting 225 from 250 leaves us with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 10:
250 divided by 75 is 3 with a remainder of 25.
The next digit of our result is 3. 
Result so far: 10855.0533
Deduct 225 from 250 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Our division results in 10855.0533 with a remaining 0.00025.