We look at the division of 646626 by 26 
The aim is to understand the frequency of 26 in 646626.

Let's proceed to step 1:
6 divided by 26 is 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 26

Moving on to step 2:
The number 26 fits into 64 2 times, leaving a remainder of 12.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtracting 52 from 64 leaves us with 12.
Bring next digit (6) of the dividend behind the 12 and repeat the process: 126 / 26

On to step 3:
26 can be fit into 126 4 times, resulting in a remainder of 22.
The next digit of our result is 4. 
Result so far: 24.0
Subtracting 104 from 126 leaves us with 22.
Fetch the next digit (6) from the dividend, attach it to 22 and continue: 226 / 26

Moving on to step 4:
26 can be fit into 226 8 times, resulting in a remainder of 18.
Use 8 as the next digit of our solution. 
Result so far: 248.0
Deduct 208 from 226 and we're left with 18.
Fetch the next digit (2) from the dividend, attach it to 18 and continue: 182 / 26

Advancing to step 5:
26 can be fit into 182 7 times, resulting in a remainder of 0.
Put 7 as the next digit of the answer. 
Result so far: 2487.0
Subtracting 182 from 182 leaves us with 0.
Append the next digit (6) from the dividend to 0 and continue with: 6 / 26

Going ahead to step 6:
26 goes into 6 0 times with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 24870.0
Subtracting 0 from 6 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 7:
The number 26 fits into 60 2 times, leaving a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 24870.2
The remainder is 8 after subtracting 52 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 8:
When dividing 80 by 26, we get 3 with a remainder of 2.
Write down 3 as next digit of the result. 
Result so far: 24870.23
If we take 78 away from 80, we end up 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.

Going ahead to step 9:
The number 26 fits into 20 0 times, leaving a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 24870.23
The remainder is 20 after subtracting 0 from 20.
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 10:
200 divided by 26 is 7 with a remainder of 18.
Use 7 as the next digit of our solution. 
Result so far: 24870.2307
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.

On to step 11:
26 goes into 180 6 times with a remainder of 24.
Record the quotient 6 as the next digit in the result. 
Result so far: 24870.23076
The remainder is 24 after subtracting 156 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 12:
When dividing 240 by 26, we get 9 with a remainder of 6.
Write down 9 as next digit of the result. 
Result so far: 24870.230769
Subtracting 234 from 240 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 13:
26 goes into 60 2 times with a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 24870.2307692
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.

Going ahead to step 14:
26 goes into 80 3 times with a remainder of 2.
Use 3 as the next digit of our solution. 
Result so far: 24870.23076923
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.

Our division results in 24870.23076923 with a remaining 2e-09.