We look at the division of 29483979 by 686 
The aim is to understand the frequency of 686 in 29483979.

Advancing to step 1:
686 goes into 2 0 times with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Append the next digit (9) from the dividend to 2 and continue with: 29 / 686

Moving on to step 2:
686 can be fit into 29 0 times, resulting in a remainder of 29.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 29, we end up with 29.
Bring next digit (4) of the dividend behind the 29 and repeat the process: 294 / 686

Let's proceed to step 3:
686 can be fit into 294 0 times, resulting in a remainder of 294.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 294, we end up with 294.
Fetch the next digit (8) from the dividend, attach it to 294 and continue: 2948 / 686

Let's proceed to step 4:
When dividing 2948 by 686, we get 4 with a remainder of 204.
Use 4 as the next digit of our solution. 
Result so far: 4.0
If we subtract 2744 from 2948, we get 204.
Take the next digit (3) from the dividend and append it to 204, then repeat: 2043 / 686

Advancing to step 5:
686 goes into 2043 2 times with a remainder of 671.
The number 2 becomes the next digit in our result. 
Result so far: 42.0
The remainder is 671 after subtracting 1372 from 2043.
Bring next digit (9) of the dividend behind the 671 and repeat the process: 6719 / 686

Let's proceed to step 6:
6719 divided by 686 is 9 with a remainder of 545.
Use 9 as the next digit of our solution. 
Result so far: 429.0
Deduct 6174 from 6719 and we're left with 545.
Take the next digit (7) from the dividend and append it to 545, then repeat: 5457 / 686

Advancing to step 7:
686 can be fit into 5457 7 times, resulting in a remainder of 655.
The next digit of our result is 7. 
Result so far: 4297.0
If we subtract 4802 from 5457, we get 655.
Grab the next digit (9) from the dividend, add it to 655, then carry on: 6559 / 686

On to step 8:
The number 686 fits into 6559 9 times, leaving a remainder of 385.
The next digit of our result is 9. 
Result so far: 42979.0
The remainder is 385 after subtracting 6174 from 6559.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3850, and continue the process.

Step 9:
686 goes into 3850 5 times with a remainder of 420.
Write down 5 as next digit of the result. 
Result so far: 42979.5
The remainder is 420 after subtracting 3430 from 3850.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Step 10:
4200 divided by 686 is 6 with a remainder of 84.
The number 6 becomes the next digit in our result. 
Result so far: 42979.56
The remainder is 84 after subtracting 4116 from 4200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Going ahead to step 11:
686 can be fit into 840 1 times, resulting in a remainder of 154.
The next digit of our result is 1. 
Result so far: 42979.561
The remainder is 154 after subtracting 686 from 840.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1540, and continue the process.

Moving on to step 12:
If we divide 1540 by 686, we get 2 and a remainder of 168.
Put 2 as the next digit of the answer. 
Result so far: 42979.5612
Subtracting 1372 from 1540 leaves us with 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Moving on to step 13:
686 goes into 1680 2 times with a remainder of 308.
Use 2 as the next digit of our solution. 
Result so far: 42979.56122
If we take 1372 away from 1680, we end up with 308.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3080, and continue the process.

The quotient of the division is 42979.56122, and the remainder is 0.000308.