572100 divided by 72 
The aim is to understand the frequency of 72 in 572100.

Step 1:
If we divide 5 by 72, we get 0 and a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Append the next digit (7) from the dividend to 5 and continue with: 57 / 72

Advancing to step 2:
When dividing 57 by 72, we get 0 with a remainder of 57.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 57 and we're left with 57.
Append the next digit (2) from the dividend to 57 and continue with: 572 / 72

Moving on to step 3:
572 divided by 72 is 7 with a remainder of 68.
Use 7 as the next digit of our solution. 
Result so far: 7.0
If we take 504 away from 572, we end up with 68.
Grab the next digit (1) from the dividend, add it to 68, then carry on: 681 / 72

Advancing to step 4:
72 goes into 681 9 times with a remainder of 33.
The next digit of our result is 9. 
Result so far: 79.0
Subtracting 648 from 681 leaves us with 33.
Bring next digit (0) of the dividend behind the 33 and repeat the process: 330 / 72

Let's proceed to step 5:
72 goes into 330 4 times with a remainder of 42.
Put 4 as the next digit of the answer. 
Result so far: 794.0
Subtract 288 from 330 to get 42.
Append the next digit (0) from the dividend to 42 and continue with: 420 / 72

Moving on to step 6:
If we divide 420 by 72, we get 5 and a remainder of 60.
Write down 5 as next digit of the result. 
Result so far: 7945.0
Deduct 360 from 420 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 7:
72 can be fit into 600 8 times, resulting in a remainder of 24.
Use 8 as the next digit of our solution. 
Result so far: 7945.8
If we take 576 away from 600, we end up with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 8:
72 can be fit into 240 3 times, resulting in a remainder of 24.
Put 3 as the next digit of the answer. 
Result so far: 7945.83
Subtracting 216 from 240 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 9:
72 goes into 240 3 times with a remainder of 24.
Use 3 as the next digit of our solution. 
Result so far: 7945.833
Subtracting 216 from 240 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

The final result is 7945.833 with a remainder of 0.0024.