163909 ÷ 79 
The aim is to understand the frequency of 79 in 163909.

Step 1:
The number 79 fits into 1 0 times, leaving a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 79

On to step 2:
79 can be fit into 16 0 times, resulting in a remainder of 16.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 16 to get 16.
Include the next digit (3) from the dividend after 16, then repeat: 163 / 79

Let's proceed to step 3:
79 can be fit into 163 2 times, resulting in a remainder of 5.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we subtract 158 from 163, we get 5.
Include the next digit (9) from the dividend after 5, then repeat: 59 / 79

Moving on to step 4:
When dividing 59 by 79, we get 0 with a remainder of 59.
Put 0 as the next digit of the answer. 
Result so far: 20.0
If we take 0 away from 59, we end up with 59.
Bring next digit (0) of the dividend behind the 59 and repeat the process: 590 / 79

Advancing to step 5:
79 goes into 590 7 times with a remainder of 37.
The number 7 becomes the next digit in our result. 
Result so far: 207.0
The remainder is 37 after subtracting 553 from 590.
Take the next digit (9) from the dividend and append it to 37, then repeat: 379 / 79

Step 6:
When dividing 379 by 79, we get 4 with a remainder of 63.
Write down 4 as next digit of the result. 
Result so far: 2074.0
If we take 316 away from 379, we end up 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:
If we divide 630 by 79, we get 7 and a remainder of 77.
The number 7 becomes the next digit in our result. 
Result so far: 2074.7
If we take 553 away from 630, we end up 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.

Moving on to step 8:
770 divided by 79 is 9 with a remainder of 59.
Write down 9 as next digit of the result. 
Result so far: 2074.79
If we subtract 711 from 770, we get 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Going ahead to step 9:
When dividing 590 by 79, we get 7 with a remainder of 37.
Record the quotient 7 as the next digit in the result. 
Result so far: 2074.797
Deduct 553 from 590 and we're left with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Let's proceed to step 10:
370 divided by 79 is 4 with a remainder of 54.
Record the quotient 4 as the next digit in the result. 
Result so far: 2074.7974
Deduct 316 from 370 and we're left with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

On to step 11:
If we divide 540 by 79, we get 6 and a remainder of 66.
The number 6 becomes the next digit in our result. 
Result so far: 2074.79746
Deduct 474 from 540 and we're left 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.

On to step 12:
660 divided by 79 is 8 with a remainder of 28.
The number 8 becomes the next digit in our result. 
Result so far: 2074.797468
If we take 632 away from 660, we end up 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.

Moving on to step 13:
280 divided by 79 is 3 with a remainder of 43.
Write down 3 as next digit of the result. 
Result so far: 2074.7974683
The remainder is 43 after subtracting 237 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Let's proceed to step 14:
The number 79 fits into 430 5 times, leaving a remainder of 35.
The number 5 becomes the next digit in our result. 
Result so far: 2074.79746835
If we subtract 395 from 430, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

The final outcome is 2074.79746835, with a leftover of 3.5e-08.