We divide 26121588 by 309
The aim is to understand the frequency of 309 in 26121588.

On to step 1:
When dividing 2 by 309, we get 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Fetch the next digit (6) from the dividend, attach it to 2 and continue: 26 / 309

Moving on to step 2:
The number 309 fits into 26 0 times, leaving a remainder of 26.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 26, we end up with 26.
Take the next digit (1) from the dividend and append it to 26, then repeat: 261 / 309

Let's proceed to step 3:
309 goes into 261 0 times with a remainder of 261.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 261, we get 261.
Fetch the next digit (2) from the dividend, attach it to 261 and continue: 2612 / 309

Let's proceed to step 4:
309 can be fit into 2612 8 times, resulting in a remainder of 140.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
If we take 2472 away from 2612, we end up with 140.
Bring next digit (1) of the dividend behind the 140 and repeat the process: 1401 / 309

Going ahead to step 5:
When dividing 1401 by 309, we get 4 with a remainder of 165.
Use 4 as the next digit of our solution. 
Result so far: 84.0
Deduct 1236 from 1401 and we're left with 165.
Bring next digit (5) of the dividend behind the 165 and repeat the process: 1655 / 309

Going ahead to step 6:
1655 divided by 309 is 5 with a remainder of 110.
Write down 5 as next digit of the result. 
Result so far: 845.0
If we take 1545 away from 1655, we end up with 110.
Include the next digit (8) from the dividend after 110, then repeat: 1108 / 309

Step 7:
When dividing 1108 by 309, we get 3 with a remainder of 181.
Use 3 as the next digit of our solution. 
Result so far: 8453.0
Deduct 927 from 1108 and we're left with 181.
Take the next digit (8) from the dividend and append it to 181, then repeat: 1818 / 309

Step 8:
If we divide 1818 by 309, we get 5 and a remainder of 273.
The number 5 becomes the next digit in our result. 
Result so far: 84535.0
If we subtract 1545 from 1818, we get 273.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2730, and continue the process.

Let's proceed to step 9:
When dividing 2730 by 309, we get 8 with a remainder of 258.
The next digit of our result is 8. 
Result so far: 84535.8
Deduct 2472 from 2730 and we're left with 258.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2580, and continue the process.

Let's proceed to step 10:
309 goes into 2580 8 times with a remainder of 108.
Write down 8 as next digit of the result. 
Result so far: 84535.88
Subtract 2472 from 2580 to get 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

The quotient of the division is 84535.88, and the remainder is 0.108.