815311 ÷ 26 
The aim is to understand the frequency of 26 in 815311.

Step 1:
26 can be fit into 8 0 times, resulting in a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 26

Going ahead to step 2:
The number 26 fits into 81 3 times, leaving a remainder of 3.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
The remainder is 3 after subtracting 78 from 81.
Include the next digit (5) from the dividend after 3, then repeat: 35 / 26

Moving on to step 3:
26 can be fit into 35 1 times, resulting in a remainder of 9.
The next digit of our result is 1. 
Result so far: 31.0
If we subtract 26 from 35, we get 9.
Fetch the next digit (3) from the dividend, attach it to 9 and continue: 93 / 26

Advancing to step 4:
The number 26 fits into 93 3 times, leaving a remainder of 15.
Put 3 as the next digit of the answer. 
Result so far: 313.0
If we take 78 away from 93, we end up with 15.
Grab the next digit (1) from the dividend, add it to 15, then carry on: 151 / 26

Step 5:
The number 26 fits into 151 5 times, leaving a remainder of 21.
The number 5 becomes the next digit in our result. 
Result so far: 3135.0
If we take 130 away from 151, we end up with 21.
Bring next digit (1) of the dividend behind the 21 and repeat the process: 211 / 26

Moving on to step 6:
If we divide 211 by 26, we get 8 and a remainder of 3.
Put 8 as the next digit of the answer. 
Result so far: 31358.0
If we subtract 208 from 211, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 7:
30 divided by 26 is 1 with a remainder of 4.
The number 1 becomes the next digit in our result. 
Result so far: 31358.1
Subtract 26 from 30 to 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.

On to step 8:
26 can be fit into 40 1 times, resulting in a remainder of 14.
The number 1 becomes the next digit in our result. 
Result so far: 31358.11
If we take 26 away from 40, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

The final outcome is 31358.11, with a leftover of 0.014.