We look at the division of 575050 by 72 
The aim is to understand the frequency of 72 in 575050.

Step 1:
If we divide 5 by 72, we get 0 and a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Bring next digit (7) of the dividend behind the 5 and repeat the process: 57 / 72

Going ahead to step 2:
When dividing 57 by 72, we get 0 with a remainder of 57.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 57, we get 57.
Bring next digit (5) of the dividend behind the 57 and repeat the process: 575 / 72

Moving on to step 3:
575 divided by 72 is 7 with a remainder of 71.
Write down 7 as next digit of the result. 
Result so far: 7.0
Subtract 504 from 575 to get 71.
Include the next digit (0) from the dividend after 71, then repeat: 710 / 72

On to step 4:
72 goes into 710 9 times with a remainder of 62.
The number 9 becomes the next digit in our result. 
Result so far: 79.0
Deduct 648 from 710 and we're left with 62.
Include the next digit (5) from the dividend after 62, then repeat: 625 / 72

Going ahead to step 5:
When dividing 625 by 72, we get 8 with a remainder of 49.
The number 8 becomes the next digit in our result. 
Result so far: 798.0
Subtract 576 from 625 to get 49.
Append the next digit (0) from the dividend to 49 and continue with: 490 / 72

Advancing to step 6:
The number 72 fits into 490 6 times, leaving a remainder of 58.
Record the quotient 6 as the next digit in the result. 
Result so far: 7986.0
Subtract 432 from 490 to get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Step 7:
580 divided by 72 is 8 with a remainder of 4.
Use 8 as the next digit of our solution. 
Result so far: 7986.8
Deduct 576 from 580 and we're left 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.

Let's proceed to step 8:
When dividing 40 by 72, we get 0 with a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 7986.8
Deduct 0 from 40 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 9:
72 goes into 400 5 times with a remainder of 40.
Use 5 as the next digit of our solution. 
Result so far: 7986.805
The remainder is 40 after subtracting 360 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 10:
400 divided by 72 is 5 with a remainder of 40.
Use 5 as the next digit of our solution. 
Result so far: 7986.8055
Deduct 360 from 400 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

The final result is 7986.8055 with a remainder of 0.0004.