We divide 255661 by 72
The aim is to understand the frequency of 72 in 255661.

On to step 1:
2 divided by 72 is 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Grab the next digit (5) from the dividend, add it to 2, then carry on: 25 / 72

Going ahead to step 2:
If we divide 25 by 72, we get 0 and a remainder of 25.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 25 and we're left with 25.
Append the next digit (5) from the dividend to 25 and continue with: 255 / 72

Moving on to step 3:
If we divide 255 by 72, we get 3 and a remainder of 39.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtracting 216 from 255 leaves us with 39.
Include the next digit (6) from the dividend after 39, then repeat: 396 / 72

Moving on to step 4:
396 divided by 72 is 5 with a remainder of 36.
Record the quotient 5 as the next digit in the result. 
Result so far: 35.0
If we take 360 away from 396, we end up with 36.
Include the next digit (6) from the dividend after 36, then repeat: 366 / 72

Going ahead to step 5:
72 can be fit into 366 5 times, resulting in a remainder of 6.
The number 5 becomes the next digit in our result. 
Result so far: 355.0
If we subtract 360 from 366, we get 6.
Append the next digit (1) from the dividend to 6 and continue with: 61 / 72

Going ahead to step 6:
The number 72 fits into 61 0 times, leaving a remainder of 61.
Use 0 as the next digit of our solution. 
Result so far: 3550.0
Subtract 0 from 61 to get 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Let's proceed to step 7:
72 goes into 610 8 times with a remainder of 34.
The number 8 becomes the next digit in our result. 
Result so far: 3550.8
Subtract 576 from 610 to get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Let's proceed to step 8:
When dividing 340 by 72, we get 4 with a remainder of 52.
Write down 4 as next digit of the result. 
Result so far: 3550.84
Deduct 288 from 340 and we're left with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Moving on to step 9:
72 goes into 520 7 times with a remainder of 16.
Put 7 as the next digit of the answer. 
Result so far: 3550.847
Subtract 504 from 520 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 10:
72 goes into 160 2 times with a remainder of 16.
Write down 2 as next digit of the result. 
Result so far: 3550.8472
Subtracting 144 from 160 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 11:
The number 72 fits into 160 2 times, leaving a remainder of 16.
Record the quotient 2 as the next digit in the result. 
Result so far: 3550.84722
The remainder is 16 after subtracting 144 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

The quotient of the division is 3550.84722, and the remainder is 1.6e-05.