We're dividing 39878190 by 26 
The aim is to understand the frequency of 26 in 39878190.

Moving on to step 1:
3 divided by 26 is 0 with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
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 2:
When dividing 39 by 26, we get 1 with a remainder of 13.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 13 after subtracting 26 from 39.
Include the next digit (8) from the dividend after 13, then repeat: 138 / 26

Going ahead to step 3:
The number 26 fits into 138 5 times, leaving a remainder of 8.
Use 5 as the next digit of our solution. 
Result so far: 15.0
If we take 130 away from 138, we end up with 8.
Bring next digit (7) of the dividend behind the 8 and repeat the process: 87 / 26

Moving on to step 4:
26 goes into 87 3 times with a remainder of 9.
Record the quotient 3 as the next digit in the result. 
Result so far: 153.0
Subtract 78 from 87 to get 9.
Include the next digit (8) from the dividend after 9, then repeat: 98 / 26

Going ahead to step 5:
26 can be fit into 98 3 times, resulting in a remainder of 20.
Record the quotient 3 as the next digit in the result. 
Result so far: 1533.0
Subtracting 78 from 98 leaves us with 20.
Include the next digit (1) from the dividend after 20, then repeat: 201 / 26

On to step 6:
26 goes into 201 7 times with a remainder of 19.
The number 7 becomes the next digit in our result. 
Result so far: 15337.0
Subtracting 182 from 201 leaves us with 19.
Take the next digit (9) from the dividend and append it to 19, then repeat: 199 / 26

Advancing to step 7:
The number 26 fits into 199 7 times, leaving a remainder of 17.
Put 7 as the next digit of the answer. 
Result so far: 153377.0
Deduct 182 from 199 and we're left with 17.
Fetch the next digit (0) from the dividend, attach it to 17 and continue: 170 / 26

Step 8:
170 divided by 26 is 6 with a remainder of 14.
Write down 6 as next digit of the result. 
Result so far: 1533776.0
Deduct 156 from 170 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 9:
If we divide 140 by 26, we get 5 and a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 1533776.5
If we take 130 away from 140, we end up with 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 10:
26 goes into 100 3 times with a remainder of 22.
Use 3 as the next digit of our solution. 
Result so far: 1533776.53
If we subtract 78 from 100, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 11:
The number 26 fits into 220 8 times, leaving a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 1533776.538
Subtracting 208 from 220 leaves us 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.

Moving on to step 12:
The number 26 fits into 120 4 times, leaving a remainder of 16.
Write down 4 as next digit of the result. 
Result so far: 1533776.5384
Subtract 104 from 120 to get 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 13:
26 can be fit into 160 6 times, resulting in a remainder of 4.
The next digit of our result is 6. 
Result so far: 1533776.53846
The remainder is 4 after subtracting 156 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 14:
26 goes into 40 1 times with a remainder of 14.
The next digit of our result is 1. 
Result so far: 1533776.538461
Subtracting 26 from 40 leaves us 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.

Advancing to step 15:
26 can be fit into 140 5 times, resulting in a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 1533776.5384615
The remainder is 10 after subtracting 130 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 16:
26 goes into 100 3 times with a remainder of 22.
Put 3 as the next digit of the answer. 
Result so far: 1533776.53846153
If we take 78 away from 100, we end up with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Our division results in 1533776.53846153 with a remaining 2.2e-08.