We're dividing 639257 by 26 
The aim is to understand the frequency of 26 in 639257.

Going ahead to step 1:
6 divided by 26 is 0 with 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.
Grab the next digit (3) from the dividend, add it to 6, then carry on: 63 / 26

Moving on to step 2:
If we divide 63 by 26, we get 2 and a remainder of 11.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtract 52 from 63 to get 11.
Grab the next digit (9) from the dividend, add it to 11, then carry on: 119 / 26

Advancing to step 3:
If we divide 119 by 26, we get 4 and a remainder of 15.
Put 4 as the next digit of the answer. 
Result so far: 24.0
Deduct 104 from 119 and we're left with 15.
Grab the next digit (2) from the dividend, add it to 15, then carry on: 152 / 26

Let's proceed to step 4:
When dividing 152 by 26, we get 5 with a remainder of 22.
Write down 5 as next digit of the result. 
Result so far: 245.0
Subtract 130 from 152 to get 22.
Grab the next digit (5) from the dividend, add it to 22, then carry on: 225 / 26

Let's proceed to step 5:
The number 26 fits into 225 8 times, leaving a remainder of 17.
Write down 8 as next digit of the result. 
Result so far: 2458.0
If we take 208 away from 225, we end up with 17.
Take the next digit (7) from the dividend and append it to 17, then repeat: 177 / 26

On to step 6:
26 can be fit into 177 6 times, resulting in a remainder of 21.
Put 6 as the next digit of the answer. 
Result so far: 24586.0
Deduct 156 from 177 and we're left with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Moving on to step 7:
26 goes into 210 8 times with a remainder of 2.
Use 8 as the next digit of our solution. 
Result so far: 24586.8
Subtracting 208 from 210 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.

Moving on to step 8:
26 goes into 20 0 times with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 24586.8
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 9:
26 goes into 200 7 times with a remainder of 18.
The next digit of our result is 7. 
Result so far: 24586.807
Deduct 182 from 200 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 10:
If we divide 180 by 26, we get 6 and a remainder of 24.
The number 6 becomes the next digit in our result. 
Result so far: 24586.8076
Deduct 156 from 180 and we're left 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.

Going ahead to step 11:
26 can be fit into 240 9 times, resulting in a remainder of 6.
The next digit of our result is 9. 
Result so far: 24586.80769
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.

Going ahead to step 12:
60 divided by 26 is 2 with a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 24586.807692
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 13:
If we divide 80 by 26, we get 3 and a remainder of 2.
The next digit of our result is 3. 
Result so far: 24586.8076923
Deduct 78 from 80 and we're left 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.

Let's proceed to step 14:
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: 24586.8076923
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.

Our division results in 24586.8076923 with a remaining 2e-08.