540725 ÷ 75 
The aim is to understand the frequency of 75 in 540725.

Step 1:
5 divided by 75 is 0 with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Fetch the next digit (4) from the dividend, attach it to 5 and continue: 54 / 75

Moving on to step 2:
54 divided by 75 is 0 with a remainder of 54.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 54, we get 54.
Include the next digit (0) from the dividend after 54, then repeat: 540 / 75

Step 3:
When dividing 540 by 75, we get 7 with a remainder of 15.
Use 7 as the next digit of our solution. 
Result so far: 7.0
If we subtract 525 from 540, we get 15.
Append the next digit (7) from the dividend to 15 and continue with: 157 / 75

Step 4:
75 goes into 157 2 times with a remainder of 7.
Use 2 as the next digit of our solution. 
Result so far: 72.0
Deduct 150 from 157 and we're left with 7.
Append the next digit (2) from the dividend to 7 and continue with: 72 / 75

Step 5:
72 divided by 75 is 0 with a remainder of 72.
Put 0 as the next digit of the answer. 
Result so far: 720.0
If we take 0 away from 72, we end up with 72.
Bring next digit (5) of the dividend behind the 72 and repeat the process: 725 / 75

Moving on to step 6:
75 goes into 725 9 times with a remainder of 50.
The number 9 becomes the next digit in our result. 
Result so far: 7209.0
Subtract 675 from 725 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 7:
500 divided by 75 is 6 with a remainder of 50.
Put 6 as the next digit of the answer. 
Result so far: 7209.6
Subtract 450 from 500 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 8:
75 goes into 500 6 times with a remainder of 50.
Put 6 as the next digit of the answer. 
Result so far: 7209.66
The remainder is 50 after subtracting 450 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

The final outcome is 7209.66, with a leftover of 0.05.