We look at the division of 728546 by 72 
The aim is to understand the frequency of 72 in 728546.

Let's proceed to step 1:
72 can be fit into 7 0 times, resulting in a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Grab the next digit (2) from the dividend, add it to 7, then carry on: 72 / 72

Let's proceed to step 2:
If we divide 72 by 72, we get 1 and a remainder of 0.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 72 from 72 leaves us with 0.
Take the next digit (8) from the dividend and append it to 0, then repeat: 8 / 72

On to step 3:
When dividing 8 by 72, we get 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
Subtracting 0 from 8 leaves us with 8.
Fetch the next digit (5) from the dividend, attach it to 8 and continue: 85 / 72

Going ahead to step 4:
The number 72 fits into 85 1 times, leaving a remainder of 13.
Put 1 as the next digit of the answer. 
Result so far: 101.0
Subtract 72 from 85 to get 13.
Take the next digit (4) from the dividend and append it to 13, then repeat: 134 / 72

On to step 5:
134 divided by 72 is 1 with a remainder of 62.
Record the quotient 1 as the next digit in the result. 
Result so far: 1011.0
If we subtract 72 from 134, we get 62.
Include the next digit (6) from the dividend after 62, then repeat: 626 / 72

Let's proceed to step 6:
72 goes into 626 8 times with a remainder of 50.
Put 8 as the next digit of the answer. 
Result so far: 10118.0
Subtract 576 from 626 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 7:
The number 72 fits into 500 6 times, leaving a remainder of 68.
Put 6 as the next digit of the answer. 
Result so far: 10118.6
Subtracting 432 from 500 leaves us with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Let's proceed to step 8:
72 goes into 680 9 times with a remainder of 32.
Write down 9 as next digit of the result. 
Result so far: 10118.69
Deduct 648 from 680 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 9:
72 can be fit into 320 4 times, resulting in a remainder of 32.
Put 4 as the next digit of the answer. 
Result so far: 10118.694
Subtract 288 from 320 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 10:
72 goes into 320 4 times with a remainder of 32.
The next digit of our result is 4. 
Result so far: 10118.6944
Deduct 288 from 320 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

The final result is 10118.6944 with a remainder of 0.00032.