We look at the division of 515827 by 26 
The aim is to understand the frequency of 26 in 515827.

Going ahead to step 1:
If we divide 5 by 26, we get 0 and a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Include the next digit (1) from the dividend after 5, then repeat: 51 / 26

Step 2:
51 divided by 26 is 1 with a remainder of 25.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 26 from 51, we get 25.
Include the next digit (5) from the dividend after 25, then repeat: 255 / 26

Let's proceed to step 3:
255 divided by 26 is 9 with a remainder of 21.
The number 9 becomes the next digit in our result. 
Result so far: 19.0
Deduct 234 from 255 and we're left with 21.
Take the next digit (8) from the dividend and append it to 21, then repeat: 218 / 26

Let's proceed to step 4:
26 goes into 218 8 times with a remainder of 10.
The number 8 becomes the next digit in our result. 
Result so far: 198.0
Deduct 208 from 218 and we're left with 10.
Grab the next digit (2) from the dividend, add it to 10, then carry on: 102 / 26

On to step 5:
The number 26 fits into 102 3 times, leaving a remainder of 24.
Record the quotient 3 as the next digit in the result. 
Result so far: 1983.0
Deduct 78 from 102 and we're left with 24.
Grab the next digit (7) from the dividend, add it to 24, then carry on: 247 / 26

On to step 6:
The number 26 fits into 247 9 times, leaving a remainder of 13.
The number 9 becomes the next digit in our result. 
Result so far: 19839.0
Subtracting 234 from 247 leaves us with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

On to step 7:
26 goes into 130 5 times with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 19839.5
Deduct 130 from 130 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 8:
The number 26 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 19839.5
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 9:
0 divided by 26 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 19839.5
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

In conclusion, the division gives 19839.5 with a balance of 0.0.