215855 divided by 72 
The aim is to understand the frequency of 72 in 215855.

Advancing to step 1:
The number 72 fits into 2 0 times, leaving a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 72

On to step 2:
21 divided by 72 is 0 with a remainder of 21.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 21 to get 21.
Fetch the next digit (5) from the dividend, attach it to 21 and continue: 215 / 72

Going ahead to step 3:
The number 72 fits into 215 2 times, leaving a remainder of 71.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we take 144 away from 215, we end up with 71.
Bring next digit (8) of the dividend behind the 71 and repeat the process: 718 / 72

Going ahead to step 4:
72 can be fit into 718 9 times, resulting in a remainder of 70.
The next digit of our result is 9. 
Result so far: 29.0
Subtracting 648 from 718 leaves us with 70.
Grab the next digit (5) from the dividend, add it to 70, then carry on: 705 / 72

Moving on to step 5:
When dividing 705 by 72, we get 9 with a remainder of 57.
Put 9 as the next digit of the answer. 
Result so far: 299.0
Deduct 648 from 705 and we're left with 57.
Include the next digit (5) from the dividend after 57, then repeat: 575 / 72

Moving on to step 6:
575 divided by 72 is 7 with a remainder of 71.
Use 7 as the next digit of our solution. 
Result so far: 2997.0
Subtracting 504 from 575 leaves us with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

On to step 7:
If we divide 710 by 72, we get 9 and a remainder of 62.
Use 9 as the next digit of our solution. 
Result so far: 2997.9
The remainder is 62 after subtracting 648 from 710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Step 8:
When dividing 620 by 72, we get 8 with a remainder of 44.
The number 8 becomes the next digit in our result. 
Result so far: 2997.98
If we take 576 away from 620, we end up with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Step 9:
When dividing 440 by 72, we get 6 with a remainder of 8.
The number 6 becomes the next digit in our result. 
Result so far: 2997.986
Subtracting 432 from 440 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 10:
72 goes into 80 1 times with a remainder of 8.
The next digit of our result is 1. 
Result so far: 2997.9861
If we take 72 away from 80, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 11:
When dividing 80 by 72, we get 1 with a remainder of 8.
Write down 1 as next digit of the result. 
Result so far: 2997.98611
Deduct 72 from 80 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

In conclusion, the division gives 2997.98611 with a balance of 8e-06.