We look at the division of 518224 by 79 
The aim is to understand the frequency of 79 in 518224.

On to step 1:
79 goes into 5 0 times with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 79

On to step 2:
51 divided by 79 is 0 with a remainder of 51.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 51 after subtracting 0 from 51.
Bring next digit (8) of the dividend behind the 51 and repeat the process: 518 / 79

On to step 3:
518 divided by 79 is 6 with a remainder of 44.
Put 6 as the next digit of the answer. 
Result so far: 6.0
Deduct 474 from 518 and we're left with 44.
Grab the next digit (2) from the dividend, add it to 44, then carry on: 442 / 79

Going ahead to step 4:
The number 79 fits into 442 5 times, leaving a remainder of 47.
Use 5 as the next digit of our solution. 
Result so far: 65.0
Subtracting 395 from 442 leaves us with 47.
Append the next digit (2) from the dividend to 47 and continue with: 472 / 79

On to step 5:
79 can be fit into 472 5 times, resulting in a remainder of 77.
Record the quotient 5 as the next digit in the result. 
Result so far: 655.0
If we take 395 away from 472, we end up with 77.
Bring next digit (4) of the dividend behind the 77 and repeat the process: 774 / 79

Moving on to step 6:
The number 79 fits into 774 9 times, leaving a remainder of 63.
The next digit of our result is 9. 
Result so far: 6559.0
Subtracting 711 from 774 leaves us with 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Advancing to step 7:
The number 79 fits into 630 7 times, leaving a remainder of 77.
The next digit of our result is 7. 
Result so far: 6559.7
Subtracting 553 from 630 leaves us with 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Step 8:
770 divided by 79 is 9 with a remainder of 59.
Put 9 as the next digit of the answer. 
Result so far: 6559.79
The remainder is 59 after subtracting 711 from 770.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

On to step 9:
590 divided by 79 is 7 with a remainder of 37.
The next digit of our result is 7. 
Result so far: 6559.797
If we subtract 553 from 590, we get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Advancing to step 10:
79 goes into 370 4 times with a remainder of 54.
Put 4 as the next digit of the answer. 
Result so far: 6559.7974
The remainder is 54 after subtracting 316 from 370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Let's proceed to step 11:
540 divided by 79 is 6 with a remainder of 66.
Write down 6 as next digit of the result. 
Result so far: 6559.79746
If we take 474 away from 540, we end up with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Advancing to step 12:
79 goes into 660 8 times with a remainder of 28.
The number 8 becomes the next digit in our result. 
Result so far: 6559.797468
Subtracting 632 from 660 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 13:
When dividing 280 by 79, we get 3 with a remainder of 43.
The next digit of our result is 3. 
Result so far: 6559.7974683
Subtracting 237 from 280 leaves us with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Going ahead to step 14:
When dividing 430 by 79, we get 5 with a remainder of 35.
Use 5 as the next digit of our solution. 
Result so far: 6559.79746835
Deduct 395 from 430 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

After the division, we end up with 6559.79746835 and a remainder of 3.5e-08.