We look at the division of 25238388 by 79 
The aim is to understand the frequency of 79 in 25238388.

Advancing to step 1:
The number 79 fits into 2 0 times, leaving a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Append the next digit (5) from the dividend to 2 and continue with: 25 / 79

Advancing to step 2:
The number 79 fits into 25 0 times, leaving a remainder of 25.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 25 after subtracting 0 from 25.
Append the next digit (2) from the dividend to 25 and continue with: 252 / 79

Going ahead to step 3:
252 divided by 79 is 3 with a remainder of 15.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Subtract 237 from 252 to get 15.
Include the next digit (3) from the dividend after 15, then repeat: 153 / 79

Step 4:
The number 79 fits into 153 1 times, leaving a remainder of 74.
Put 1 as the next digit of the answer. 
Result so far: 31.0
The remainder is 74 after subtracting 79 from 153.
Include the next digit (8) from the dividend after 74, then repeat: 748 / 79

Step 5:
79 goes into 748 9 times with a remainder of 37.
Put 9 as the next digit of the answer. 
Result so far: 319.0
The remainder is 37 after subtracting 711 from 748.
Include the next digit (3) from the dividend after 37, then repeat: 373 / 79

Moving on to step 6:
79 goes into 373 4 times with a remainder of 57.
Put 4 as the next digit of the answer. 
Result so far: 3194.0
If we take 316 away from 373, we end up with 57.
Take the next digit (8) from the dividend and append it to 57, then repeat: 578 / 79

Going ahead to step 7:
578 divided by 79 is 7 with a remainder of 25.
Use 7 as the next digit of our solution. 
Result so far: 31947.0
Deduct 553 from 578 and we're left with 25.
Take the next digit (8) from the dividend and append it to 25, then repeat: 258 / 79

Going ahead to step 8:
If we divide 258 by 79, we get 3 and a remainder of 21.
The number 3 becomes the next digit in our result. 
Result so far: 319473.0
If we take 237 away from 258, we end up with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

On to step 9:
79 can be fit into 210 2 times, resulting in a remainder of 52.
The next digit of our result is 2. 
Result so far: 319473.2
Subtracting 158 from 210 leaves us with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Going ahead to step 10:
520 divided by 79 is 6 with a remainder of 46.
Put 6 as the next digit of the answer. 
Result so far: 319473.26
The remainder is 46 after subtracting 474 from 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Going ahead to step 11:
If we divide 460 by 79, we get 5 and a remainder of 65.
Record the quotient 5 as the next digit in the result. 
Result so far: 319473.265
If we subtract 395 from 460, we get 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Let's proceed to step 12:
When dividing 650 by 79, we get 8 with a remainder of 18.
Record the quotient 8 as the next digit in the result. 
Result so far: 319473.2658
Subtract 632 from 650 to 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.

Let's proceed to step 13:
79 goes into 180 2 times with a remainder of 22.
Put 2 as the next digit of the answer. 
Result so far: 319473.26582
The remainder is 22 after subtracting 158 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 14:
If we divide 220 by 79, we get 2 and a remainder of 62.
Put 2 as the next digit of the answer. 
Result so far: 319473.265822
Subtract 158 from 220 to get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

The quotient of the division is 319473.265822, and the remainder is 6.2e-06.