We look at the division of 428600 by 72 
The aim is to understand the frequency of 72 in 428600.

Let's proceed to step 1:
4 divided by 72 is 0 with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Grab the next digit (2) from the dividend, add it to 4, then carry on: 42 / 72

Going ahead to step 2:
When dividing 42 by 72, we get 0 with a remainder of 42.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 42, we get 42.
Grab the next digit (8) from the dividend, add it to 42, then carry on: 428 / 72

Going ahead to step 3:
When dividing 428 by 72, we get 5 with a remainder of 68.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
Subtract 360 from 428 to get 68.
Include the next digit (6) from the dividend after 68, then repeat: 686 / 72

On to step 4:
72 goes into 686 9 times with a remainder of 38.
Use 9 as the next digit of our solution. 
Result so far: 59.0
The remainder is 38 after subtracting 648 from 686.
Grab the next digit (0) from the dividend, add it to 38, then carry on: 380 / 72

Let's proceed to step 5:
380 divided by 72 is 5 with a remainder of 20.
The next digit of our result is 5. 
Result so far: 595.0
The remainder is 20 after subtracting 360 from 380.
Take the next digit (0) from the dividend and append it to 20, then repeat: 200 / 72

Let's proceed to step 6:
72 goes into 200 2 times with a remainder of 56.
Write down 2 as next digit of the result. 
Result so far: 5952.0
If we take 144 away from 200, we end up with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Step 7:
The number 72 fits into 560 7 times, leaving a remainder of 56.
Use 7 as the next digit of our solution. 
Result so far: 5952.7
If we subtract 504 from 560, we get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Step 8:
72 goes into 560 7 times with a remainder of 56.
Put 7 as the next digit of the answer. 
Result so far: 5952.77
Subtract 504 from 560 to get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

In conclusion, the division gives 5952.77 with a balance of 0.056.