We look at the division of 628471 by 79 
The aim is to understand the frequency of 79 in 628471.

On to step 1:
79 goes into 6 0 times with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Bring next digit (2) of the dividend behind the 6 and repeat the process: 62 / 79

Going ahead to step 2:
79 can be fit into 62 0 times, resulting in a remainder of 62.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 62 after subtracting 0 from 62.
Take the next digit (8) from the dividend and append it to 62, then repeat: 628 / 79

Let's proceed to step 3:
628 divided by 79 is 7 with a remainder of 75.
Write down 7 as next digit of the result. 
Result so far: 7.0
If we take 553 away from 628, we end up with 75.
Append the next digit (4) from the dividend to 75 and continue with: 754 / 79

Let's proceed to step 4:
754 divided by 79 is 9 with a remainder of 43.
Use 9 as the next digit of our solution. 
Result so far: 79.0
The remainder is 43 after subtracting 711 from 754.
Take the next digit (7) from the dividend and append it to 43, then repeat: 437 / 79

Let's proceed to step 5:
79 goes into 437 5 times with a remainder of 42.
The number 5 becomes the next digit in our result. 
Result so far: 795.0
If we subtract 395 from 437, we get 42.
Grab the next digit (1) from the dividend, add it to 42, then carry on: 421 / 79

On to step 6:
When dividing 421 by 79, we get 5 with a remainder of 26.
Record the quotient 5 as the next digit in the result. 
Result so far: 7955.0
If we take 395 away from 421, we end up with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Advancing to step 7:
If we divide 260 by 79, we get 3 and a remainder of 23.
Put 3 as the next digit of the answer. 
Result so far: 7955.3
Deduct 237 from 260 and we're left with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Advancing to step 8:
The number 79 fits into 230 2 times, leaving a remainder of 72.
The number 2 becomes the next digit in our result. 
Result so far: 7955.32
If we subtract 158 from 230, we get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Let's proceed to step 9:
If we divide 720 by 79, we get 9 and a remainder of 9.
The next digit of our result is 9. 
Result so far: 7955.329
Subtracting 711 from 720 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 10:
79 can be fit into 90 1 times, resulting in a remainder of 11.
Record the quotient 1 as the next digit in the result. 
Result so far: 7955.3291
The remainder is 11 after subtracting 79 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 11:
79 can be fit into 110 1 times, resulting in a remainder of 31.
The number 1 becomes the next digit in our result. 
Result so far: 7955.32911
Subtract 79 from 110 to get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

After the division, we end up with 7955.32911 and a remainder of 3.1e-05.