We look at the division of 549638 by 72 
The aim is to understand the frequency of 72 in 549638.

Step 1:
72 can be fit into 5 0 times, resulting in a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Fetch the next digit (4) from the dividend, attach it to 5 and continue: 54 / 72

Step 2:
54 divided by 72 is 0 with a remainder of 54.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 54, we get 54.
Fetch the next digit (9) from the dividend, attach it to 54 and continue: 549 / 72

Advancing to step 3:
When dividing 549 by 72, we get 7 with a remainder of 45.
Put 7 as the next digit of the answer. 
Result so far: 7.0
If we take 504 away from 549, we end up with 45.
Bring next digit (6) of the dividend behind the 45 and repeat the process: 456 / 72

Moving on to step 4:
The number 72 fits into 456 6 times, leaving a remainder of 24.
Use 6 as the next digit of our solution. 
Result so far: 76.0
If we subtract 432 from 456, we get 24.
Bring next digit (3) of the dividend behind the 24 and repeat the process: 243 / 72

Let's proceed to step 5:
The number 72 fits into 243 3 times, leaving a remainder of 27.
Put 3 as the next digit of the answer. 
Result so far: 763.0
Subtract 216 from 243 to get 27.
Bring next digit (8) of the dividend behind the 27 and repeat the process: 278 / 72

Advancing to step 6:
If we divide 278 by 72, we get 3 and a remainder of 62.
Use 3 as the next digit of our solution. 
Result so far: 7633.0
The remainder is 62 after subtracting 216 from 278.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Step 7:
72 goes into 620 8 times with a remainder of 44.
Put 8 as the next digit of the answer. 
Result so far: 7633.8
The remainder is 44 after subtracting 576 from 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Let's proceed to step 8:
72 goes into 440 6 times with a remainder of 8.
Write down 6 as next digit of the result. 
Result so far: 7633.86
Subtract 432 from 440 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 9:
72 goes into 80 1 times with a remainder of 8.
Use 1 as the next digit of our solution. 
Result so far: 7633.861
The remainder is 8 after subtracting 72 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 10:
72 can be fit into 80 1 times, resulting in a remainder of 8.
Write down 1 as next digit of the result. 
Result so far: 7633.8611
If we subtract 72 from 80, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

In conclusion, the division gives 7633.8611 with a balance of 8e-05.