Let's divide 8521 by 79
The aim is to understand the frequency of 79 in 8521.

Going ahead to step 1:
79 goes into 8 0 times with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Append the next digit (5) from the dividend to 8 and continue with: 85 / 79

Advancing to step 2:
When dividing 85 by 79, we get 1 with a remainder of 6.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 79 from 85, we get 6.
Include the next digit (2) from the dividend after 6, then repeat: 62 / 79

Advancing to step 3:
The number 79 fits into 62 0 times, leaving a remainder of 62.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
If we subtract 0 from 62, we get 62.
Grab the next digit (1) from the dividend, add it to 62, then carry on: 621 / 79

Step 4:
79 goes into 621 7 times with a remainder of 68.
The next digit of our result is 7. 
Result so far: 107.0
If we take 553 away from 621, we end up with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Going ahead to step 5:
The number 79 fits into 680 8 times, leaving a remainder of 48.
Use 8 as the next digit of our solution. 
Result so far: 107.8
Subtracting 632 from 680 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 6:
The number 79 fits into 480 6 times, leaving a remainder of 6.
Write down 6 as next digit of the result. 
Result so far: 107.86
If we subtract 474 from 480, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 7:
When dividing 60 by 79, we get 0 with a remainder of 60.
Record the quotient 0 as the next digit in the result. 
Result so far: 107.86
Subtracting 0 from 60 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 8:
600 divided by 79 is 7 with a remainder of 47.
Put 7 as the next digit of the answer. 
Result so far: 107.8607
Subtracting 553 from 600 leaves us with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

On to step 9:
The number 79 fits into 470 5 times, leaving a remainder of 75.
The next digit of our result is 5. 
Result so far: 107.86075
If we subtract 395 from 470, we get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Let's proceed to step 10:
When dividing 750 by 79, we get 9 with a remainder of 39.
The number 9 becomes the next digit in our result. 
Result so far: 107.860759
Subtracting 711 from 750 leaves us with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Moving on to step 11:
79 can be fit into 390 4 times, resulting in a remainder of 74.
Use 4 as the next digit of our solution. 
Result so far: 107.8607594
Subtracting 316 from 390 leaves us with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Let's proceed to step 12:
79 can be fit into 740 9 times, resulting in a remainder of 29.
The next digit of our result is 9. 
Result so far: 107.86075949
Deduct 711 from 740 and we're left with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Our division results in 107.86075949 with a remaining 2.9e-08.