We look at the division of 145560 by 72 
The aim is to understand the frequency of 72 in 145560.

Moving on to step 1:
72 can be fit into 1 0 times, resulting in a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Append the next digit (4) from the dividend to 1 and continue with: 14 / 72

Advancing to step 2:
72 goes into 14 0 times with a remainder of 14.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 14, we get 14.
Bring next digit (5) of the dividend behind the 14 and repeat the process: 145 / 72

Going ahead to step 3:
If we divide 145 by 72, we get 2 and a remainder of 1.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we take 144 away from 145, we end up with 1.
Bring next digit (5) of the dividend behind the 1 and repeat the process: 15 / 72

On to step 4:
When dividing 15 by 72, we get 0 with a remainder of 15.
Use 0 as the next digit of our solution. 
Result so far: 20.0
Subtracting 0 from 15 leaves us with 15.
Fetch the next digit (6) from the dividend, attach it to 15 and continue: 156 / 72

Let's proceed to step 5:
156 divided by 72 is 2 with a remainder of 12.
The next digit of our result is 2. 
Result so far: 202.0
Subtracting 144 from 156 leaves us with 12.
Include the next digit (0) from the dividend after 12, then repeat: 120 / 72

On to step 6:
120 divided by 72 is 1 with a remainder of 48.
Put 1 as the next digit of the answer. 
Result so far: 2021.0
If we subtract 72 from 120, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 7:
480 divided by 72 is 6 with a remainder of 48.
The number 6 becomes the next digit in our result. 
Result so far: 2021.6
Deduct 432 from 480 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 8:
72 can be fit into 480 6 times, resulting in a remainder of 48.
Put 6 as the next digit of the answer. 
Result so far: 2021.66
If we subtract 432 from 480, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

The final result is 2021.66 with a remainder of 0.048.