We look at the division of 263508 by 26 
The aim is to understand the frequency of 26 in 263508.

Step 1:
The number 26 fits into 2 0 times, leaving a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Grab the next digit (6) from the dividend, add it to 2, then carry on: 26 / 26

On to step 2:
26 can be fit into 26 1 times, resulting in a remainder of 0.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 26 from 26, we get 0.
Fetch the next digit (3) from the dividend, attach it to 0 and continue: 3 / 26

Advancing to step 3:
3 divided by 26 is 0 with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
The remainder is 3 after subtracting 0 from 3.
Fetch the next digit (5) from the dividend, attach it to 3 and continue: 35 / 26

Step 4:
The number 26 fits into 35 1 times, leaving a remainder of 9.
Write down 1 as next digit of the result. 
Result so far: 101.0
Subtracting 26 from 35 leaves us with 9.
Fetch the next digit (0) from the dividend, attach it to 9 and continue: 90 / 26

Moving on to step 5:
26 goes into 90 3 times with a remainder of 12.
Use 3 as the next digit of our solution. 
Result so far: 1013.0
If we take 78 away from 90, we end up with 12.
Grab the next digit (8) from the dividend, add it to 12, then carry on: 128 / 26

On to step 6:
26 can be fit into 128 4 times, resulting in a remainder of 24.
Write down 4 as next digit of the result. 
Result so far: 10134.0
Subtract 104 from 128 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 7:
The number 26 fits into 240 9 times, leaving a remainder of 6.
Write down 9 as next digit of the result. 
Result so far: 10134.9
Subtract 234 from 240 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 8:
26 can be fit into 60 2 times, resulting in a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 10134.92
If we subtract 52 from 60, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 9:
When dividing 80 by 26, we get 3 with a remainder of 2.
Record the quotient 3 as the next digit in the result. 
Result so far: 10134.923
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.

On to step 10:
26 goes into 20 0 times with a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 10134.923
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.

On to step 11:
If we divide 200 by 26, we get 7 and a remainder of 18.
Put 7 as the next digit of the answer. 
Result so far: 10134.92307
If we subtract 182 from 200, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 12:
180 divided by 26 is 6 with a remainder of 24.
Put 6 as the next digit of the answer. 
Result so far: 10134.923076
Subtracting 156 from 180 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.

Moving on to step 13:
26 goes into 240 9 times with a remainder of 6.
Put 9 as the next digit of the answer. 
Result so far: 10134.9230769
If we subtract 234 from 240, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 14:
If we divide 60 by 26, we get 2 and a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 10134.92307692
If we subtract 52 from 60, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The final result is 10134.92307692 with a remainder of 8e-09.