We're dividing 644763 by 26 
The aim is to understand the frequency of 26 in 644763.

Advancing to step 1:
6 divided by 26 is 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 26

Moving on to step 2:
64 divided by 26 is 2 with a remainder of 12.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Deduct 52 from 64 and we're left with 12.
Bring next digit (4) of the dividend behind the 12 and repeat the process: 124 / 26

Moving on to step 3:
If we divide 124 by 26, we get 4 and a remainder of 20.
Write down 4 as next digit of the result. 
Result so far: 24.0
If we subtract 104 from 124, we get 20.
Grab the next digit (7) from the dividend, add it to 20, then carry on: 207 / 26

Going ahead to step 4:
When dividing 207 by 26, we get 7 with a remainder of 25.
Use 7 as the next digit of our solution. 
Result so far: 247.0
The remainder is 25 after subtracting 182 from 207.
Fetch the next digit (6) from the dividend, attach it to 25 and continue: 256 / 26

Moving on to step 5:
If we divide 256 by 26, we get 9 and a remainder of 22.
Record the quotient 9 as the next digit in the result. 
Result so far: 2479.0
Subtracting 234 from 256 leaves us with 22.
Fetch the next digit (3) from the dividend, attach it to 22 and continue: 223 / 26

Advancing to step 6:
If we divide 223 by 26, we get 8 and a remainder of 15.
Record the quotient 8 as the next digit in the result. 
Result so far: 24798.0
If we subtract 208 from 223, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 7:
26 can be fit into 150 5 times, resulting in a remainder of 20.
The next digit of our result is 5. 
Result so far: 24798.5
If we take 130 away from 150, we end up 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.

Going ahead to step 8:
If we divide 200 by 26, we get 7 and a remainder of 18.
Use 7 as the next digit of our solution. 
Result so far: 24798.57
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 9:
26 can be fit into 180 6 times, resulting in a remainder of 24.
The next digit of our result is 6. 
Result so far: 24798.576
If we take 156 away from 180, we end up 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 10:
240 divided by 26 is 9 with a remainder of 6.
The next digit of our result is 9. 
Result so far: 24798.5769
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.

Moving on to step 11:
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: 24798.57692
Deduct 52 from 60 and we're left 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.

Step 12:
26 can be fit into 80 3 times, resulting in a remainder of 2.
The number 3 becomes the next digit in our result. 
Result so far: 24798.576923
Subtract 78 from 80 to get 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 13:
When dividing 20 by 26, we get 0 with a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 24798.576923
Subtracting 0 from 20 leaves us 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.

Going ahead to step 14:
The number 26 fits into 200 7 times, leaving a remainder of 18.
The number 7 becomes the next digit in our result. 
Result so far: 24798.57692307
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.

In conclusion, the division gives 24798.57692307 with a balance of 1.8e-08.