We're dividing 549231 by 72 
The aim is to understand the frequency of 72 in 549231.

Step 1:
If we divide 5 by 72, we get 0 and a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Include the next digit (4) from the dividend after 5, then repeat: 54 / 72

Let's proceed to step 2:
The number 72 fits into 54 0 times, leaving a remainder of 54.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 54, we end up with 54.
Bring next digit (9) of the dividend behind the 54 and repeat the process: 549 / 72

Moving on to step 3:
The number 72 fits into 549 7 times, leaving a remainder of 45.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Subtracting 504 from 549 leaves us with 45.
Grab the next digit (2) from the dividend, add it to 45, then carry on: 452 / 72

Step 4:
72 can be fit into 452 6 times, resulting in a remainder of 20.
Record the quotient 6 as the next digit in the result. 
Result so far: 76.0
If we subtract 432 from 452, we get 20.
Append the next digit (3) from the dividend to 20 and continue with: 203 / 72

Moving on to step 5:
When dividing 203 by 72, we get 2 with a remainder of 59.
Record the quotient 2 as the next digit in the result. 
Result so far: 762.0
If we subtract 144 from 203, we get 59.
Take the next digit (1) from the dividend and append it to 59, then repeat: 591 / 72

Moving on to step 6:
72 goes into 591 8 times with a remainder of 15.
The number 8 becomes the next digit in our result. 
Result so far: 7628.0
Subtract 576 from 591 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 7:
150 divided by 72 is 2 with a remainder of 6.
Write down 2 as next digit of the result. 
Result so far: 7628.2
The remainder is 6 after subtracting 144 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 8:
If we divide 60 by 72, we get 0 and a remainder of 60.
The next digit of our result is 0. 
Result so far: 7628.2
Subtracting 0 from 60 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 9:
The number 72 fits into 600 8 times, leaving a remainder of 24.
Put 8 as the next digit of the answer. 
Result so far: 7628.208
Subtract 576 from 600 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 10:
72 can be fit into 240 3 times, resulting in a remainder of 24.
The next digit of our result is 3. 
Result so far: 7628.2083
Subtracting 216 from 240 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 11:
72 goes into 240 3 times with a remainder of 24.
Put 3 as the next digit of the answer. 
Result so far: 7628.20833
Subtracting 216 from 240 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

The final outcome is 7628.20833, with a leftover of 2.4e-05.