We look at the division of 43869 by 72 
The aim is to understand the frequency of 72 in 43869.

Advancing to step 1:
4 divided by 72 is 0 with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Fetch the next digit (3) from the dividend, attach it to 4 and continue: 43 / 72

Let's proceed to step 2:
The number 72 fits into 43 0 times, leaving a remainder of 43.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 43, we end up with 43.
Take the next digit (8) from the dividend and append it to 43, then repeat: 438 / 72

On to step 3:
72 can be fit into 438 6 times, resulting in a remainder of 6.
The next digit of our result is 6. 
Result so far: 6.0
Subtracting 432 from 438 leaves us with 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 72

Let's proceed to step 4:
When dividing 66 by 72, we get 0 with a remainder of 66.
Use 0 as the next digit of our solution. 
Result so far: 60.0
Subtracting 0 from 66 leaves us with 66.
Fetch the next digit (9) from the dividend, attach it to 66 and continue: 669 / 72

Step 5:
669 divided by 72 is 9 with a remainder of 21.
Write down 9 as next digit of the result. 
Result so far: 609.0
If we subtract 648 from 669, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Let's proceed to step 6:
When dividing 210 by 72, we get 2 with a remainder of 66.
Write down 2 as next digit of the result. 
Result so far: 609.2
Subtract 144 from 210 to get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Going ahead to step 7:
The number 72 fits into 660 9 times, leaving a remainder of 12.
Use 9 as the next digit of our solution. 
Result so far: 609.29
If we take 648 away from 660, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 8:
If we divide 120 by 72, we get 1 and a remainder of 48.
The number 1 becomes the next digit in our result. 
Result so far: 609.291
The remainder is 48 after subtracting 72 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 9:
72 goes into 480 6 times with a remainder of 48.
Record the quotient 6 as the next digit in the result. 
Result so far: 609.2916
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.

Let's proceed to step 10:
When dividing 480 by 72, we get 6 with a remainder of 48.
Put 6 as the next digit of the answer. 
Result so far: 609.29166
The remainder is 48 after subtracting 432 from 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

The quotient of the division is 609.29166, and the remainder is 4.8e-05.