We look at the division of 640750 by 26 
The aim is to understand the frequency of 26 in 640750.

Step 1:
If we divide 6 by 26, we get 0 and a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 26

Step 2:
26 can be fit into 64 2 times, resulting in a remainder of 12.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 12 after subtracting 52 from 64.
Include the next digit (0) from the dividend after 12, then repeat: 120 / 26

Going ahead to step 3:
120 divided by 26 is 4 with a remainder of 16.
Write down 4 as next digit of the result. 
Result so far: 24.0
If we take 104 away from 120, we end up with 16.
Grab the next digit (7) from the dividend, add it to 16, then carry on: 167 / 26

Let's proceed to step 4:
167 divided by 26 is 6 with a remainder of 11.
Write down 6 as next digit of the result. 
Result so far: 246.0
Subtracting 156 from 167 leaves us with 11.
Append the next digit (5) from the dividend to 11 and continue with: 115 / 26

Step 5:
When dividing 115 by 26, we get 4 with a remainder of 11.
Write down 4 as next digit of the result. 
Result so far: 2464.0
If we subtract 104 from 115, we get 11.
Append the next digit (0) from the dividend to 11 and continue with: 110 / 26

Step 6:
The number 26 fits into 110 4 times, leaving a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 24644.0
The remainder is 6 after subtracting 104 from 110.
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.
Record the quotient 2 as the next digit in the result. 
Result so far: 24644.2
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.

Moving on to step 8:
80 divided by 26 is 3 with a remainder of 2.
The next digit of our result is 3. 
Result so far: 24644.23
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.

Advancing to step 9:
26 can be fit into 20 0 times, resulting in a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 24644.23
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 10:
The number 26 fits into 200 7 times, leaving a remainder of 18.
Use 7 as the next digit of our solution. 
Result so far: 24644.2307
The remainder is 18 after subtracting 182 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 11:
26 can be fit into 180 6 times, resulting in a remainder of 24.
Record the quotient 6 as the next digit in the result. 
Result so far: 24644.23076
Subtract 156 from 180 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.

Going ahead to step 12:
26 goes into 240 9 times with a remainder of 6.
Write down 9 as next digit of the result. 
Result so far: 24644.230769
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.
Use 2 as the next digit of our solution. 
Result so far: 24644.2307692
Subtracting 52 from 60 leaves us with 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.
Record the quotient 3 as the next digit in the result. 
Result so far: 24644.23076923
The remainder is 2 after subtracting 78 from 80.
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 24644.23076923 with a remaining 2e-09.