We're dividing 523961 by 26 
The aim is to understand the frequency of 26 in 523961.

On to step 1:
26 goes into 5 0 times with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Take the next digit (2) from the dividend and append it to 5, then repeat: 52 / 26

Step 2:
52 divided by 26 is 2 with a remainder of 0.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtracting 52 from 52 leaves us with 0.
Bring next digit (3) of the dividend behind the 0 and repeat the process: 3 / 26

Moving on to step 3:
If we divide 3 by 26, we get 0 and a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 20.0
If we take 0 away from 3, we end up with 3.
Take the next digit (9) from the dividend and append it to 3, then repeat: 39 / 26

Going ahead to step 4:
When dividing 39 by 26, we get 1 with a remainder of 13.
Put 1 as the next digit of the answer. 
Result so far: 201.0
The remainder is 13 after subtracting 26 from 39.
Take the next digit (6) from the dividend and append it to 13, then repeat: 136 / 26

Going ahead to step 5:
26 can be fit into 136 5 times, resulting in a remainder of 6.
The number 5 becomes the next digit in our result. 
Result so far: 2015.0
If we subtract 130 from 136, we get 6.
Grab the next digit (1) from the dividend, add it to 6, then carry on: 61 / 26

Moving on to step 6:
26 can be fit into 61 2 times, resulting in a remainder of 9.
Record the quotient 2 as the next digit in the result. 
Result so far: 20152.0
Subtracting 52 from 61 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 7:
If we divide 90 by 26, we get 3 and a remainder of 12.
Record the quotient 3 as the next digit in the result. 
Result so far: 20152.3
If we take 78 away from 90, 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.

Step 8:
If we divide 120 by 26, we get 4 and a remainder of 16.
The next digit of our result is 4. 
Result so far: 20152.34
If we take 104 away from 120, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 9:
26 goes into 160 6 times with a remainder of 4.
The next digit of our result is 6. 
Result so far: 20152.346
Subtracting 156 from 160 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 10:
26 can be fit into 40 1 times, resulting in a remainder of 14.
Use 1 as the next digit of our solution. 
Result so far: 20152.3461
Deduct 26 from 40 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 11:
26 can be fit into 140 5 times, resulting in a remainder of 10.
The next digit of our result is 5. 
Result so far: 20152.34615
If we subtract 130 from 140, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 12:
26 can be fit into 100 3 times, resulting in a remainder of 22.
Put 3 as the next digit of the answer. 
Result so far: 20152.346153
The remainder is 22 after subtracting 78 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 13:
The number 26 fits into 220 8 times, leaving a remainder of 12.
Record the quotient 8 as the next digit in the result. 
Result so far: 20152.3461538
The remainder is 12 after subtracting 208 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 14:
26 goes into 120 4 times with a remainder of 16.
The next digit of our result is 4. 
Result so far: 20152.34615384
If we take 104 away from 120, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Our division results in 20152.34615384 with a remaining 1.6e-08.