We look at the division of 72815 by 78 
The aim is to understand the frequency of 78 in 72815.

Moving on to step 1:
78 can be fit into 7 0 times, resulting in a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Include the next digit (2) from the dividend after 7, then repeat: 72 / 78

On to step 2:
78 goes into 72 0 times with a remainder of 72.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 72 to get 72.
Grab the next digit (8) from the dividend, add it to 72, then carry on: 728 / 78

Advancing to step 3:
728 divided by 78 is 9 with a remainder of 26.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
If we take 702 away from 728, we end up with 26.
Include the next digit (1) from the dividend after 26, then repeat: 261 / 78

Moving on to step 4:
78 goes into 261 3 times with a remainder of 27.
Record the quotient 3 as the next digit in the result. 
Result so far: 93.0
Subtracting 234 from 261 leaves us with 27.
Include the next digit (5) from the dividend after 27, then repeat: 275 / 78

Going ahead to step 5:
78 goes into 275 3 times with a remainder of 41.
Write down 3 as next digit of the result. 
Result so far: 933.0
If we subtract 234 from 275, we get 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Advancing to step 6:
78 can be fit into 410 5 times, resulting in a remainder of 20.
Use 5 as the next digit of our solution. 
Result so far: 933.5
The remainder is 20 after subtracting 390 from 410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 7:
The number 78 fits into 200 2 times, leaving a remainder of 44.
Write down 2 as next digit of the result. 
Result so far: 933.52
If we take 156 away from 200, 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.

Let's proceed to step 8:
78 goes into 440 5 times with a remainder of 50.
Write down 5 as next digit of the result. 
Result so far: 933.525
If we take 390 away from 440, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 9:
If we divide 500 by 78, we get 6 and a remainder of 32.
Record the quotient 6 as the next digit in the result. 
Result so far: 933.5256
Deduct 468 from 500 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Advancing to step 10:
The number 78 fits into 320 4 times, leaving a remainder of 8.
The next digit of our result is 4. 
Result so far: 933.52564
If we take 312 away from 320, 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.

Let's proceed to step 11:
80 divided by 78 is 1 with a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 933.525641
Subtracting 78 from 80 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 12:
When dividing 20 by 78, we get 0 with a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 933.525641
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 13:
200 divided by 78 is 2 with a remainder of 44.
Use 2 as the next digit of our solution. 
Result so far: 933.52564102
If we subtract 156 from 200, we get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Our division results in 933.52564102 with a remaining 4.4e-08.