874255 ÷ 72 
The aim is to understand the frequency of 72 in 874255.

On to step 1:
When dividing 8 by 72, we get 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (7) from the dividend after 8, then repeat: 87 / 72

Advancing to step 2:
If we divide 87 by 72, we get 1 and a remainder of 15.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 72 from 87 to get 15.
Take the next digit (4) from the dividend and append it to 15, then repeat: 154 / 72

Step 3:
154 divided by 72 is 2 with a remainder of 10.
Use 2 as the next digit of our solution. 
Result so far: 12.0
Deduct 144 from 154 and we're left with 10.
Bring next digit (2) of the dividend behind the 10 and repeat the process: 102 / 72

Going ahead to step 4:
If we divide 102 by 72, we get 1 and a remainder of 30.
Record the quotient 1 as the next digit in the result. 
Result so far: 121.0
Subtract 72 from 102 to get 30.
Append the next digit (5) from the dividend to 30 and continue with: 305 / 72

Going ahead to step 5:
The number 72 fits into 305 4 times, leaving a remainder of 17.
Record the quotient 4 as the next digit in the result. 
Result so far: 1214.0
If we subtract 288 from 305, we get 17.
Take the next digit (5) from the dividend and append it to 17, then repeat: 175 / 72

Step 6:
175 divided by 72 is 2 with a remainder of 31.
The next digit of our result is 2. 
Result so far: 12142.0
If we subtract 144 from 175, we get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

On to step 7:
The number 72 fits into 310 4 times, leaving a remainder of 22.
Write down 4 as next digit of the result. 
Result so far: 12142.4
Subtracting 288 from 310 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Moving on to step 8:
When dividing 220 by 72, we get 3 with a remainder of 4.
Put 3 as the next digit of the answer. 
Result so far: 12142.43
If we subtract 216 from 220, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 9:
72 goes into 40 0 times with a remainder of 40.
The next digit of our result is 0. 
Result so far: 12142.43
Deduct 0 from 40 and we're left 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.

Step 10:
When dividing 400 by 72, we get 5 with a remainder of 40.
Put 5 as the next digit of the answer. 
Result so far: 12142.4305
If we take 360 away from 400, we end up 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.

Let's proceed to step 11:
72 can be fit into 400 5 times, resulting in a remainder of 40.
The number 5 becomes the next digit in our result. 
Result so far: 12142.43055
Subtract 360 from 400 to 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.

The final outcome is 12142.43055, with a leftover of 4e-05.