We're dividing 261355 by 72 
The aim is to understand the frequency of 72 in 261355.

Step 1:
72 goes into 2 0 times with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Include the next digit (6) from the dividend after 2, then repeat: 26 / 72

Step 2:
If we divide 26 by 72, we get 0 and a remainder of 26.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 26 leaves us with 26.
Bring next digit (1) of the dividend behind the 26 and repeat the process: 261 / 72

On to step 3:
If we divide 261 by 72, we get 3 and a remainder of 45.
Put 3 as the next digit of the answer. 
Result so far: 3.0
The remainder is 45 after subtracting 216 from 261.
Take the next digit (3) from the dividend and append it to 45, then repeat: 453 / 72

Step 4:
If we divide 453 by 72, we get 6 and a remainder of 21.
The next digit of our result is 6. 
Result so far: 36.0
Subtract 432 from 453 to get 21.
Grab the next digit (5) from the dividend, add it to 21, then carry on: 215 / 72

Advancing to step 5:
215 divided by 72 is 2 with a remainder of 71.
Put 2 as the next digit of the answer. 
Result so far: 362.0
Subtract 144 from 215 to get 71.
Append the next digit (5) from the dividend to 71 and continue with: 715 / 72

Going ahead to step 6:
When dividing 715 by 72, we get 9 with a remainder of 67.
Put 9 as the next digit of the answer. 
Result so far: 3629.0
Deduct 648 from 715 and we're left with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Let's proceed to step 7:
72 goes into 670 9 times with a remainder of 22.
The next digit of our result is 9. 
Result so far: 3629.9
If we subtract 648 from 670, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 8:
220 divided by 72 is 3 with a remainder of 4.
Record the quotient 3 as the next digit in the result. 
Result so far: 3629.93
The remainder is 4 after subtracting 216 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 9:
40 divided by 72 is 0 with a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 3629.93
Subtracting 0 from 40 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 10:
72 goes into 400 5 times with a remainder of 40.
The number 5 becomes the next digit in our result. 
Result so far: 3629.9305
If we subtract 360 from 400, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 11:
If we divide 400 by 72, we get 5 and a remainder of 40.
Record the quotient 5 as the next digit in the result. 
Result so far: 3629.93055
Subtracting 360 from 400 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Our division results in 3629.93055 with a remaining 4e-05.