Let's divide 309966 by 79
The aim is to understand the frequency of 79 in 309966.

Going ahead to step 1:
79 can be fit into 3 0 times, resulting in a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Include the next digit (0) from the dividend after 3, then repeat: 30 / 79

Let's proceed to step 2:
When dividing 30 by 79, we get 0 with a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 30, we end up with 30.
Include the next digit (9) from the dividend after 30, then repeat: 309 / 79

Advancing to step 3:
79 can be fit into 309 3 times, resulting in a remainder of 72.
Put 3 as the next digit of the answer. 
Result so far: 3.0
The remainder is 72 after subtracting 237 from 309.
Fetch the next digit (9) from the dividend, attach it to 72 and continue: 729 / 79

Step 4:
79 can be fit into 729 9 times, resulting in a remainder of 18.
The next digit of our result is 9. 
Result so far: 39.0
The remainder is 18 after subtracting 711 from 729.
Fetch the next digit (6) from the dividend, attach it to 18 and continue: 186 / 79

Moving on to step 5:
The number 79 fits into 186 2 times, leaving a remainder of 28.
Write down 2 as next digit of the result. 
Result so far: 392.0
Deduct 158 from 186 and we're left with 28.
Take the next digit (6) from the dividend and append it to 28, then repeat: 286 / 79

Going ahead to step 6:
286 divided by 79 is 3 with a remainder of 49.
Write down 3 as next digit of the result. 
Result so far: 3923.0
Deduct 237 from 286 and we're left with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Moving on to step 7:
The number 79 fits into 490 6 times, leaving a remainder of 16.
The next digit of our result is 6. 
Result so far: 3923.6
Subtract 474 from 490 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 8:
If we divide 160 by 79, we get 2 and a remainder of 2.
Write down 2 as next digit of the result. 
Result so far: 3923.62
Subtract 158 from 160 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 9:
79 can be fit into 20 0 times, resulting in a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 3923.62
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 10:
The number 79 fits into 200 2 times, leaving a remainder of 42.
The next digit of our result is 2. 
Result so far: 3923.6202
Subtract 158 from 200 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Let's proceed to step 11:
79 can be fit into 420 5 times, resulting in a remainder of 25.
Write down 5 as next digit of the result. 
Result so far: 3923.62025
Subtract 395 from 420 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 12:
79 goes into 250 3 times with a remainder of 13.
Put 3 as the next digit of the answer. 
Result so far: 3923.620253
Deduct 237 from 250 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 13:
79 can be fit into 130 1 times, resulting in a remainder of 51.
Record the quotient 1 as the next digit in the result. 
Result so far: 3923.6202531
If we take 79 away from 130, we end up with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

On to step 14:
79 can be fit into 510 6 times, resulting in a remainder of 36.
Write down 6 as next digit of the result. 
Result so far: 3923.62025316
The remainder is 36 after subtracting 474 from 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

In conclusion, the division gives 3923.62025316 with a balance of 3.6e-08.