We look at the division of 868109 by 72 
The aim is to understand the frequency of 72 in 868109.

Moving on to step 1:
When dividing 8 by 72, we get 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 72

On to step 2:
If we divide 86 by 72, we get 1 and a remainder of 14.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 14 after subtracting 72 from 86.
Bring next digit (8) of the dividend behind the 14 and repeat the process: 148 / 72

Let's proceed to step 3:
The number 72 fits into 148 2 times, leaving a remainder of 4.
Write down 2 as next digit of the result. 
Result so far: 12.0
Deduct 144 from 148 and we're left with 4.
Bring next digit (1) of the dividend behind the 4 and repeat the process: 41 / 72

Let's proceed to step 4:
72 can be fit into 41 0 times, resulting in a remainder of 41.
The next digit of our result is 0. 
Result so far: 120.0
If we subtract 0 from 41, we get 41.
Take the next digit (0) from the dividend and append it to 41, then repeat: 410 / 72

On to step 5:
The number 72 fits into 410 5 times, leaving a remainder of 50.
Record the quotient 5 as the next digit in the result. 
Result so far: 1205.0
If we subtract 360 from 410, we get 50.
Take the next digit (9) from the dividend and append it to 50, then repeat: 509 / 72

Advancing to step 6:
72 can be fit into 509 7 times, resulting in a remainder of 5.
Record the quotient 7 as the next digit in the result. 
Result so far: 12057.0
The remainder is 5 after subtracting 504 from 509.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 7:
72 can be fit into 50 0 times, resulting in a remainder of 50.
Write down 0 as next digit of the result. 
Result so far: 12057.0
If we take 0 away from 50, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 8:
500 divided by 72 is 6 with a remainder of 68.
The next digit of our result is 6. 
Result so far: 12057.06
Deduct 432 from 500 and we're left with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

On to step 9:
72 goes into 680 9 times with a remainder of 32.
The number 9 becomes the next digit in our result. 
Result so far: 12057.069
Subtract 648 from 680 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 10:
320 divided by 72 is 4 with a remainder of 32.
The number 4 becomes the next digit in our result. 
Result so far: 12057.0694
If we subtract 288 from 320, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Moving on to step 11:
320 divided by 72 is 4 with a remainder of 32.
The number 4 becomes the next digit in our result. 
Result so far: 12057.06944
If we subtract 288 from 320, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

In conclusion, the division gives 12057.06944 with a balance of 3.2e-05.