129897 ÷ 72 
The aim is to understand the frequency of 72 in 129897.

Step 1:
72 can be fit into 1 0 times, resulting in a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 72

Step 2:
The number 72 fits into 12 0 times, leaving a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 12 leaves us with 12.
Bring next digit (9) of the dividend behind the 12 and repeat the process: 129 / 72

Let's proceed to step 3:
When dividing 129 by 72, we get 1 with a remainder of 57.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 72 from 129, we get 57.
Fetch the next digit (8) from the dividend, attach it to 57 and continue: 578 / 72

On to step 4:
The number 72 fits into 578 8 times, leaving a remainder of 2.
The next digit of our result is 8. 
Result so far: 18.0
Subtracting 576 from 578 leaves us with 2.
Fetch the next digit (9) from the dividend, attach it to 2 and continue: 29 / 72

Let's proceed to step 5:
29 divided by 72 is 0 with a remainder of 29.
Write down 0 as next digit of the result. 
Result so far: 180.0
If we take 0 away from 29, we end up with 29.
Take the next digit (7) from the dividend and append it to 29, then repeat: 297 / 72

On to step 6:
The number 72 fits into 297 4 times, leaving a remainder of 9.
The next digit of our result is 4. 
Result so far: 1804.0
The remainder is 9 after subtracting 288 from 297.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 7:
When dividing 90 by 72, we get 1 with a remainder of 18.
Put 1 as the next digit of the answer. 
Result so far: 1804.1
Subtract 72 from 90 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 8:
180 divided by 72 is 2 with a remainder of 36.
The number 2 becomes the next digit in our result. 
Result so far: 1804.12
If we subtract 144 from 180, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Let's proceed to step 9:
360 divided by 72 is 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 1804.125
If we take 360 away from 360, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 10:
When dividing 0 by 72, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 1804.125
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 11:
72 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 1804.125
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 1804.125 with a remainder of 0.0.