We look at the division of 431374 by 75 
The aim is to understand the frequency of 75 in 431374.

Going ahead to step 1:
75 can be fit into 4 0 times, resulting in a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Take the next digit (3) from the dividend and append it to 4, then repeat: 43 / 75

Let's proceed to step 2:
75 can be fit into 43 0 times, resulting in a remainder of 43.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 43 leaves us with 43.
Take the next digit (1) from the dividend and append it to 43, then repeat: 431 / 75

Going ahead to step 3:
75 can be fit into 431 5 times, resulting in a remainder of 56.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
If we take 375 away from 431, we end up with 56.
Bring next digit (3) of the dividend behind the 56 and repeat the process: 563 / 75

Going ahead to step 4:
When dividing 563 by 75, we get 7 with a remainder of 38.
Use 7 as the next digit of our solution. 
Result so far: 57.0
If we take 525 away from 563, we end up with 38.
Take the next digit (7) from the dividend and append it to 38, then repeat: 387 / 75

Moving on to step 5:
75 goes into 387 5 times with a remainder of 12.
Write down 5 as next digit of the result. 
Result so far: 575.0
Subtract 375 from 387 to get 12.
Fetch the next digit (4) from the dividend, attach it to 12 and continue: 124 / 75

Going ahead to step 6:
When dividing 124 by 75, we get 1 with a remainder of 49.
Write down 1 as next digit of the result. 
Result so far: 5751.0
If we subtract 75 from 124, we get 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Advancing to step 7:
75 can be fit into 490 6 times, resulting in a remainder of 40.
Put 6 as the next digit of the answer. 
Result so far: 5751.6
If we subtract 450 from 490, we 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.

Let's proceed to step 8:
75 can be fit into 400 5 times, resulting in a remainder of 25.
Put 5 as the next digit of the answer. 
Result so far: 5751.65
If we take 375 away from 400, we end up 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:
75 goes into 250 3 times with a remainder of 25.
The next digit of our result is 3. 
Result so far: 5751.653
Subtract 225 from 250 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Going ahead to step 10:
75 can be fit into 250 3 times, resulting in a remainder of 25.
Use 3 as the next digit of our solution. 
Result so far: 5751.6533
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.

The final result is 5751.6533 with a remainder of 0.00025.