We look at the division of 955409 by 72 
The aim is to understand the frequency of 72 in 955409.

Advancing to step 1:
If we divide 9 by 72, we get 0 and a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Grab the next digit (5) from the dividend, add it to 9, then carry on: 95 / 72

Going ahead to step 2:
72 goes into 95 1 times with a remainder of 23.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 23 after subtracting 72 from 95.
Fetch the next digit (5) from the dividend, attach it to 23 and continue: 235 / 72

Going ahead to step 3:
If we divide 235 by 72, we get 3 and a remainder of 19.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
If we take 216 away from 235, we end up with 19.
Grab the next digit (4) from the dividend, add it to 19, then carry on: 194 / 72

Moving on to step 4:
194 divided by 72 is 2 with a remainder of 50.
The next digit of our result is 2. 
Result so far: 132.0
Subtracting 144 from 194 leaves us with 50.
Take the next digit (0) from the dividend and append it to 50, then repeat: 500 / 72

Let's proceed to step 5:
72 goes into 500 6 times with a remainder of 68.
The next digit of our result is 6. 
Result so far: 1326.0
If we subtract 432 from 500, we get 68.
Bring next digit (9) of the dividend behind the 68 and repeat the process: 689 / 72

Going ahead to step 6:
72 can be fit into 689 9 times, resulting in a remainder of 41.
The number 9 becomes the next digit in our result. 
Result so far: 13269.0
The remainder is 41 after subtracting 648 from 689.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Let's proceed to step 7:
72 can be fit into 410 5 times, resulting in a remainder of 50.
Use 5 as the next digit of our solution. 
Result so far: 13269.5
Subtract 360 from 410 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 8:
72 can be fit into 500 6 times, resulting in a remainder of 68.
Write down 6 as next digit of the result. 
Result so far: 13269.56
If we take 432 away from 500, we end up 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.

Let's proceed to step 9:
72 can be fit into 680 9 times, resulting in a remainder of 32.
Write down 9 as next digit of the result. 
Result so far: 13269.569
The remainder is 32 after subtracting 648 from 680.
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.
Put 4 as the next digit of the answer. 
Result so far: 13269.5694
The remainder is 32 after subtracting 288 from 320.
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: 13269.56944
Subtract 288 from 320 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.

After the division, we end up with 13269.56944 and a remainder of 3.2e-05.