We look at the division of 39223 by 72 
The aim is to understand the frequency of 72 in 39223.

Moving on to step 1:
3 divided by 72 is 0 with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Take the next digit (9) from the dividend and append it to 3, then repeat: 39 / 72

Going ahead to step 2:
If we divide 39 by 72, we get 0 and a remainder of 39.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 39 to get 39.
Include the next digit (2) from the dividend after 39, then repeat: 392 / 72

Let's proceed to step 3:
If we divide 392 by 72, we get 5 and a remainder of 32.
Put 5 as the next digit of the answer. 
Result so far: 5.0
If we take 360 away from 392, we end up with 32.
Take the next digit (2) from the dividend and append it to 32, then repeat: 322 / 72

Step 4:
If we divide 322 by 72, we get 4 and a remainder of 34.
The number 4 becomes the next digit in our result. 
Result so far: 54.0
Subtract 288 from 322 to get 34.
Take the next digit (3) from the dividend and append it to 34, then repeat: 343 / 72

Moving on to step 5:
If we divide 343 by 72, we get 4 and a remainder of 55.
Use 4 as the next digit of our solution. 
Result so far: 544.0
If we take 288 away from 343, we end up with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

On to step 6:
72 goes into 550 7 times with a remainder of 46.
Put 7 as the next digit of the answer. 
Result so far: 544.7
Subtract 504 from 550 to get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Step 7:
72 goes into 460 6 times with a remainder of 28.
The number 6 becomes the next digit in our result. 
Result so far: 544.76
If we subtract 432 from 460, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 8:
72 can be fit into 280 3 times, resulting in a remainder of 64.
Put 3 as the next digit of the answer. 
Result so far: 544.763
Subtract 216 from 280 to get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Going ahead to step 9:
72 can be fit into 640 8 times, resulting in a remainder of 64.
Record the quotient 8 as the next digit in the result. 
Result so far: 544.7638
If we take 576 away from 640, we end up with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Step 10:
72 goes into 640 8 times with a remainder of 64.
The number 8 becomes the next digit in our result. 
Result so far: 544.76388
Deduct 576 from 640 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

In conclusion, the division gives 544.76388 with a balance of 6.4e-05.