We look at the division of 428789 by 72 
The aim is to understand the frequency of 72 in 428789.

Step 1:
4 divided by 72 is 0 with a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Take the next digit (2) from the dividend and append it to 4, then repeat: 42 / 72

On to step 2:
If we divide 42 by 72, we get 0 and a remainder of 42.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 42 after subtracting 0 from 42.
Grab the next digit (8) from the dividend, add it to 42, then carry on: 428 / 72

Moving on to step 3:
428 divided by 72 is 5 with a remainder of 68.
Use 5 as the next digit of our solution. 
Result so far: 5.0
Deduct 360 from 428 and we're left with 68.
Include the next digit (7) from the dividend after 68, then repeat: 687 / 72

Step 4:
If we divide 687 by 72, we get 9 and a remainder of 39.
Use 9 as the next digit of our solution. 
Result so far: 59.0
If we take 648 away from 687, we end up with 39.
Append the next digit (8) from the dividend to 39 and continue with: 398 / 72

Moving on to step 5:
72 can be fit into 398 5 times, resulting in a remainder of 38.
Use 5 as the next digit of our solution. 
Result so far: 595.0
If we take 360 away from 398, we end up with 38.
Fetch the next digit (9) from the dividend, attach it to 38 and continue: 389 / 72

On to step 6:
The number 72 fits into 389 5 times, leaving a remainder of 29.
The number 5 becomes the next digit in our result. 
Result so far: 5955.0
Subtracting 360 from 389 leaves us with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Let's proceed to step 7:
When dividing 290 by 72, we get 4 with a remainder of 2.
Write down 4 as next digit of the result. 
Result so far: 5955.4
If we take 288 away from 290, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 8:
If we divide 20 by 72, we get 0 and a remainder of 20.
The next digit of our result is 0. 
Result so far: 5955.4
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 9:
If we divide 200 by 72, we get 2 and a remainder of 56.
Use 2 as the next digit of our solution. 
Result so far: 5955.402
Subtracting 144 from 200 leaves us 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 10:
If we divide 560 by 72, we get 7 and a remainder of 56.
Write down 7 as next digit of the result. 
Result so far: 5955.4027
The remainder is 56 after subtracting 504 from 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Advancing to step 11:
560 divided by 72 is 7 with a remainder of 56.
Record the quotient 7 as the next digit in the result. 
Result so far: 5955.40277
Subtracting 504 from 560 leaves us 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.

In conclusion, the division gives 5955.40277 with a balance of 5.6e-05.