We look at the division of 16879331 by 307 
The aim is to understand the frequency of 307 in 16879331.

Advancing to step 1:
1 divided by 307 is 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Bring next digit (6) of the dividend behind the 1 and repeat the process: 16 / 307

Going ahead to step 2:
307 goes into 16 0 times with a remainder of 16.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 16 and we're left with 16.
Append the next digit (8) from the dividend to 16 and continue with: 168 / 307

Advancing to step 3:
When dividing 168 by 307, we get 0 with a remainder of 168.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 168 leaves us with 168.
Bring next digit (7) of the dividend behind the 168 and repeat the process: 1687 / 307

Advancing to step 4:
If we divide 1687 by 307, we get 5 and a remainder of 152.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
Subtracting 1535 from 1687 leaves us with 152.
Take the next digit (9) from the dividend and append it to 152, then repeat: 1529 / 307

On to step 5:
When dividing 1529 by 307, we get 4 with a remainder of 301.
Put 4 as the next digit of the answer. 
Result so far: 54.0
If we take 1228 away from 1529, we end up with 301.
Grab the next digit (3) from the dividend, add it to 301, then carry on: 3013 / 307

Advancing to step 6:
307 can be fit into 3013 9 times, resulting in a remainder of 250.
The next digit of our result is 9. 
Result so far: 549.0
If we take 2763 away from 3013, we end up with 250.
Include the next digit (3) from the dividend after 250, then repeat: 2503 / 307

On to step 7:
If we divide 2503 by 307, we get 8 and a remainder of 47.
The next digit of our result is 8. 
Result so far: 5498.0
Subtracting 2456 from 2503 leaves us with 47.
Fetch the next digit (1) from the dividend, attach it to 47 and continue: 471 / 307

Moving on to step 8:
471 divided by 307 is 1 with a remainder of 164.
Use 1 as the next digit of our solution. 
Result so far: 54981.0
If we subtract 307 from 471, we get 164.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1640, and continue the process.

Let's proceed to step 9:
The number 307 fits into 1640 5 times, leaving a remainder of 105.
The next digit of our result is 5. 
Result so far: 54981.5
The remainder is 105 after subtracting 1535 from 1640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

Let's proceed to step 10:
307 goes into 1050 3 times with a remainder of 129.
The next digit of our result is 3. 
Result so far: 54981.53
If we take 921 away from 1050, we end up with 129.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1290, and continue the process.

Going ahead to step 11:
When dividing 1290 by 307, we get 4 with a remainder of 62.
Use 4 as the next digit of our solution. 
Result so far: 54981.534
Subtract 1228 from 1290 to get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Going ahead to step 12:
620 divided by 307 is 2 with a remainder of 6.
The number 2 becomes the next digit in our result. 
Result so far: 54981.5342
If we subtract 614 from 620, 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.

Advancing to step 13:
The number 307 fits into 60 0 times, leaving a remainder of 60.
Use 0 as the next digit of our solution. 
Result so far: 54981.5342
The remainder is 60 after subtracting 0 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 14:
The number 307 fits into 600 1 times, leaving a remainder of 293.
Write down 1 as next digit of the result. 
Result so far: 54981.534201
Subtract 307 from 600 to get 293.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2930, and continue the process.

Going ahead to step 15:
If we divide 2930 by 307, we get 9 and a remainder of 167.
The next digit of our result is 9. 
Result so far: 54981.5342019
Deduct 2763 from 2930 and we're left with 167.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1670, and continue the process.

On to step 16:
307 can be fit into 1670 5 times, resulting in a remainder of 135.
The number 5 becomes the next digit in our result. 
Result so far: 54981.53420195
If we take 1535 away from 1670, we end up with 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

The final result is 54981.53420195 with a remainder of 1.35e-07.