We look at the division of 709228 by 75 
The aim is to understand the frequency of 75 in 709228.

Step 1:
7 divided by 75 is 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Append the next digit (0) from the dividend to 7 and continue with: 70 / 75

Step 2:
The number 75 fits into 70 0 times, leaving a remainder of 70.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 70, we get 70.
Bring next digit (9) of the dividend behind the 70 and repeat the process: 709 / 75

Going ahead to step 3:
If we divide 709 by 75, we get 9 and a remainder of 34.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
If we take 675 away from 709, we end up with 34.
Fetch the next digit (2) from the dividend, attach it to 34 and continue: 342 / 75

On to step 4:
75 can be fit into 342 4 times, resulting in a remainder of 42.
Use 4 as the next digit of our solution. 
Result so far: 94.0
Subtracting 300 from 342 leaves us with 42.
Include the next digit (2) from the dividend after 42, then repeat: 422 / 75

Step 5:
75 can be fit into 422 5 times, resulting in a remainder of 47.
Put 5 as the next digit of the answer. 
Result so far: 945.0
If we take 375 away from 422, we end up with 47.
Bring next digit (8) of the dividend behind the 47 and repeat the process: 478 / 75

Advancing to step 6:
75 can be fit into 478 6 times, resulting in a remainder of 28.
Record the quotient 6 as the next digit in the result. 
Result so far: 9456.0
Deduct 450 from 478 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Going ahead to step 7:
280 divided by 75 is 3 with a remainder of 55.
Put 3 as the next digit of the answer. 
Result so far: 9456.3
If we subtract 225 from 280, we get 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Step 8:
When dividing 550 by 75, we get 7 with a remainder of 25.
Record the quotient 7 as the next digit in the result. 
Result so far: 9456.37
Subtract 525 from 550 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.

Step 9:
The number 75 fits into 250 3 times, leaving a remainder of 25.
The number 3 becomes the next digit in our result. 
Result so far: 9456.373
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.

Let's proceed to step 10:
If we divide 250 by 75, we get 3 and a remainder of 25.
The number 3 becomes the next digit in our result. 
Result so far: 9456.3733
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.

The final result is 9456.3733 with a remainder of 0.00025.