We look at the division of 25879339 by 312 
The aim is to understand the frequency of 312 in 25879339.

Moving on to step 1:
312 can be fit into 2 0 times, resulting in a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 312

Moving on to step 2:
312 can be fit into 25 0 times, resulting in a remainder of 25.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 25, we end up with 25.
Take the next digit (8) from the dividend and append it to 25, then repeat: 258 / 312

Step 3:
If we divide 258 by 312, we get 0 and a remainder of 258.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 258 leaves us with 258.
Take the next digit (7) from the dividend and append it to 258, then repeat: 2587 / 312

Advancing to step 4:
312 goes into 2587 8 times with a remainder of 91.
Use 8 as the next digit of our solution. 
Result so far: 8.0
Deduct 2496 from 2587 and we're left with 91.
Include the next digit (9) from the dividend after 91, then repeat: 919 / 312

Going ahead to step 5:
312 goes into 919 2 times with a remainder of 295.
The number 2 becomes the next digit in our result. 
Result so far: 82.0
If we subtract 624 from 919, we get 295.
Append the next digit (3) from the dividend to 295 and continue with: 2953 / 312

Moving on to step 6:
312 goes into 2953 9 times with a remainder of 145.
Use 9 as the next digit of our solution. 
Result so far: 829.0
If we subtract 2808 from 2953, we get 145.
Grab the next digit (3) from the dividend, add it to 145, then carry on: 1453 / 312

Moving on to step 7:
The number 312 fits into 1453 4 times, leaving a remainder of 205.
Put 4 as the next digit of the answer. 
Result so far: 8294.0
The remainder is 205 after subtracting 1248 from 1453.
Take the next digit (9) from the dividend and append it to 205, then repeat: 2059 / 312

Going ahead to step 8:
The number 312 fits into 2059 6 times, leaving a remainder of 187.
Use 6 as the next digit of our solution. 
Result so far: 82946.0
Subtracting 1872 from 2059 leaves us with 187.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1870, and continue the process.

Step 9:
1870 divided by 312 is 5 with a remainder of 310.
Record the quotient 5 as the next digit in the result. 
Result so far: 82946.5
If we subtract 1560 from 1870, we get 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

Step 10:
If we divide 3100 by 312, we get 9 and a remainder of 292.
Put 9 as the next digit of the answer. 
Result so far: 82946.59
Subtract 2808 from 3100 to get 292.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2920, and continue the process.

Let's proceed to step 11:
The number 312 fits into 2920 9 times, leaving a remainder of 112.
The next digit of our result is 9. 
Result so far: 82946.599
If we subtract 2808 from 2920, we get 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

The quotient of the division is 82946.599, and the remainder is 0.0112.