We look at the division of 923608 by 72 
The aim is to understand the frequency of 72 in 923608.

Let's proceed to step 1:
9 divided by 72 is 0 with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Take the next digit (2) from the dividend and append it to 9, then repeat: 92 / 72

Going ahead to step 2:
The number 72 fits into 92 1 times, leaving a remainder of 20.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 72 from 92 and we're left with 20.
Take the next digit (3) from the dividend and append it to 20, then repeat: 203 / 72

Step 3:
If we divide 203 by 72, we get 2 and a remainder of 59.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
The remainder is 59 after subtracting 144 from 203.
Append the next digit (6) from the dividend to 59 and continue with: 596 / 72

Moving on to step 4:
The number 72 fits into 596 8 times, leaving a remainder of 20.
Write down 8 as next digit of the result. 
Result so far: 128.0
Subtracting 576 from 596 leaves us with 20.
Bring next digit (0) of the dividend behind the 20 and repeat the process: 200 / 72

Going ahead to step 5:
When dividing 200 by 72, we get 2 with a remainder of 56.
Record the quotient 2 as the next digit in the result. 
Result so far: 1282.0
If we subtract 144 from 200, we get 56.
Fetch the next digit (8) from the dividend, attach it to 56 and continue: 568 / 72

Advancing to step 6:
The number 72 fits into 568 7 times, leaving a remainder of 64.
Put 7 as the next digit of the answer. 
Result so far: 12827.0
Subtract 504 from 568 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.

Step 7:
72 can be fit into 640 8 times, resulting in a remainder of 64.
The next digit of our result is 8. 
Result so far: 12827.8
Subtracting 576 from 640 leaves us 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.

Let's proceed to step 8:
640 divided by 72 is 8 with a remainder of 64.
Write down 8 as next digit of the result. 
Result so far: 12827.88
If we subtract 576 from 640, we 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.

The final result is 12827.88 with a remainder of 0.064.