We look at the division of 765645 by 26 
The aim is to understand the frequency of 26 in 765645.

Going ahead to step 1:
If we divide 7 by 26, we get 0 and 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.
Take the next digit (6) from the dividend and append it to 7, then repeat: 76 / 26

Step 2:
26 goes into 76 2 times with a remainder of 24.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtracting 52 from 76 leaves us with 24.
Append the next digit (5) from the dividend to 24 and continue with: 245 / 26

Step 3:
26 goes into 245 9 times with a remainder of 11.
The number 9 becomes the next digit in our result. 
Result so far: 29.0
Deduct 234 from 245 and we're left with 11.
Grab the next digit (6) from the dividend, add it to 11, then carry on: 116 / 26

Moving on to step 4:
26 goes into 116 4 times with a remainder of 12.
Record the quotient 4 as the next digit in the result. 
Result so far: 294.0
Subtract 104 from 116 to get 12.
Append the next digit (4) from the dividend to 12 and continue with: 124 / 26

Advancing to step 5:
When dividing 124 by 26, we get 4 with a remainder of 20.
Record the quotient 4 as the next digit in the result. 
Result so far: 2944.0
Subtract 104 from 124 to get 20.
Append the next digit (5) from the dividend to 20 and continue with: 205 / 26

Let's proceed to step 6:
If we divide 205 by 26, we get 7 and a remainder of 23.
The number 7 becomes the next digit in our result. 
Result so far: 29447.0
Deduct 182 from 205 and we're left with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Advancing to step 7:
230 divided by 26 is 8 with a remainder of 22.
Use 8 as the next digit of our solution. 
Result so far: 29447.8
The remainder is 22 after subtracting 208 from 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 8:
26 can be fit into 220 8 times, resulting in a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 29447.88
If we take 208 away from 220, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final result is 29447.88 with a remainder of 0.012.