810078 ÷ 72 
The aim is to understand the frequency of 72 in 810078.

Let's proceed 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
If we take 0 away from 8, we end up with 8.
Include the next digit (1) from the dividend after 8, then repeat: 81 / 72

On to step 2:
72 goes into 81 1 times with a remainder of 9.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 72 from 81, we get 9.
Bring next digit (0) of the dividend behind the 9 and repeat the process: 90 / 72

Advancing to step 3:
The number 72 fits into 90 1 times, leaving a remainder of 18.
The next digit of our result is 1. 
Result so far: 11.0
Subtracting 72 from 90 leaves us with 18.
Include the next digit (0) from the dividend after 18, then repeat: 180 / 72

Step 4:
180 divided by 72 is 2 with a remainder of 36.
The number 2 becomes the next digit in our result. 
Result so far: 112.0
If we take 144 away from 180, we end up with 36.
Fetch the next digit (7) from the dividend, attach it to 36 and continue: 367 / 72

Going ahead to step 5:
72 goes into 367 5 times with a remainder of 7.
Put 5 as the next digit of the answer. 
Result so far: 1125.0
Subtract 360 from 367 to get 7.
Bring next digit (8) of the dividend behind the 7 and repeat the process: 78 / 72

On to step 6:
72 goes into 78 1 times with a remainder of 6.
Write down 1 as next digit of the result. 
Result so far: 11251.0
Deduct 72 from 78 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 7:
When dividing 60 by 72, we get 0 with a remainder of 60.
Use 0 as the next digit of our solution. 
Result so far: 11251.0
If we take 0 away from 60, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 8:
If we divide 600 by 72, we get 8 and a remainder of 24.
The next digit of our result is 8. 
Result so far: 11251.08
The remainder is 24 after subtracting 576 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 9:
240 divided by 72 is 3 with a remainder of 24.
The number 3 becomes the next digit in our result. 
Result so far: 11251.083
Subtracting 216 from 240 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 10:
When dividing 240 by 72, we get 3 with a remainder of 24.
Put 3 as the next digit of the answer. 
Result so far: 11251.0833
Subtracting 216 from 240 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

After the division, we end up with 11251.0833 and a remainder of 0.00024.