We look at the division of 5866880 by 686 
The aim is to understand the frequency of 686 in 5866880.

Moving on to step 1:
If we divide 5 by 686, we get 0 and a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Bring next digit (8) of the dividend behind the 5 and repeat the process: 58 / 686

Moving on to step 2:
58 divided by 686 is 0 with a remainder of 58.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 58 leaves us with 58.
Fetch the next digit (6) from the dividend, attach it to 58 and continue: 586 / 686

Going ahead to step 3:
686 goes into 586 0 times with a remainder of 586.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 586, we end up with 586.
Append the next digit (6) from the dividend to 586 and continue with: 5866 / 686

Moving on to step 4:
686 goes into 5866 8 times with a remainder of 378.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
The remainder is 378 after subtracting 5488 from 5866.
Fetch the next digit (8) from the dividend, attach it to 378 and continue: 3788 / 686

Advancing to step 5:
If we divide 3788 by 686, we get 5 and a remainder of 358.
Record the quotient 5 as the next digit in the result. 
Result so far: 85.0
If we take 3430 away from 3788, we end up with 358.
Include the next digit (8) from the dividend after 358, then repeat: 3588 / 686

Step 6:
If we divide 3588 by 686, we get 5 and a remainder of 158.
Use 5 as the next digit of our solution. 
Result so far: 855.0
The remainder is 158 after subtracting 3430 from 3588.
Fetch the next digit (0) from the dividend, attach it to 158 and continue: 1580 / 686

Advancing to step 7:
The number 686 fits into 1580 2 times, leaving a remainder of 208.
Write down 2 as next digit of the result. 
Result so far: 8552.0
The remainder is 208 after subtracting 1372 from 1580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

Moving on to step 8:
686 can be fit into 2080 3 times, resulting in a remainder of 22.
Put 3 as the next digit of the answer. 
Result so far: 8552.3
If we subtract 2058 from 2080, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Going ahead to step 9:
If we divide 220 by 686, we get 0 and a remainder of 220.
Record the quotient 0 as the next digit in the result. 
Result so far: 8552.3
Subtract 0 from 220 to get 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

On to step 10:
686 goes into 2200 3 times with a remainder of 142.
Use 3 as the next digit of our solution. 
Result so far: 8552.303
Subtract 2058 from 2200 to get 142.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1420, and continue the process.

Step 11:
1420 divided by 686 is 2 with a remainder of 48.
Use 2 as the next digit of our solution. 
Result so far: 8552.3032
If we subtract 1372 from 1420, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 12:
480 divided by 686 is 0 with a remainder of 480.
Put 0 as the next digit of the answer. 
Result so far: 8552.3032
Deduct 0 from 480 and we're left with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Let's proceed to step 13:
4800 divided by 686 is 6 with a remainder of 684.
Record the quotient 6 as the next digit in the result. 
Result so far: 8552.303206
If we subtract 4116 from 4800, we get 684.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6840, and continue the process.

Step 14:
The number 686 fits into 6840 9 times, leaving a remainder of 666.
The next digit of our result is 9. 
Result so far: 8552.3032069
Subtract 6174 from 6840 to get 666.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6660, and continue the process.

Moving on to step 15:
When dividing 6660 by 686, we get 9 with a remainder of 486.
Write down 9 as next digit of the result. 
Result so far: 8552.30320699
Deduct 6174 from 6660 and we're left with 486.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4860, and continue the process.

In conclusion, the division gives 8552.30320699 with a balance of 4.86e-07.