83485163 divided by 686 
The aim is to understand the frequency of 686 in 83485163.

Going ahead to step 1:
When dividing 8 by 686, we get 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Append the next digit (3) from the dividend to 8 and continue with: 83 / 686

Going ahead to step 2:
83 divided by 686 is 0 with a remainder of 83.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 83 leaves us with 83.
Fetch the next digit (4) from the dividend, attach it to 83 and continue: 834 / 686

On to step 3:
The number 686 fits into 834 1 times, leaving a remainder of 148.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 686 from 834, we get 148.
Include the next digit (8) from the dividend after 148, then repeat: 1488 / 686

Step 4:
When dividing 1488 by 686, we get 2 with a remainder of 116.
The next digit of our result is 2. 
Result so far: 12.0
Deduct 1372 from 1488 and we're left with 116.
Fetch the next digit (5) from the dividend, attach it to 116 and continue: 1165 / 686

Going ahead to step 5:
The number 686 fits into 1165 1 times, leaving a remainder of 479.
Write down 1 as next digit of the result. 
Result so far: 121.0
If we take 686 away from 1165, we end up with 479.
Append the next digit (1) from the dividend to 479 and continue with: 4791 / 686

Let's proceed to step 6:
The number 686 fits into 4791 6 times, leaving a remainder of 675.
Use 6 as the next digit of our solution. 
Result so far: 1216.0
Subtract 4116 from 4791 to get 675.
Fetch the next digit (6) from the dividend, attach it to 675 and continue: 6756 / 686

Moving on to step 7:
686 can be fit into 6756 9 times, resulting in a remainder of 582.
Write down 9 as next digit of the result. 
Result so far: 12169.0
Subtract 6174 from 6756 to get 582.
Take the next digit (3) from the dividend and append it to 582, then repeat: 5823 / 686

Advancing to step 8:
If we divide 5823 by 686, we get 8 and a remainder of 335.
Record the quotient 8 as the next digit in the result. 
Result so far: 121698.0
Subtract 5488 from 5823 to get 335.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3350, and continue the process.

Step 9:
686 can be fit into 3350 4 times, resulting in a remainder of 606.
Put 4 as the next digit of the answer. 
Result so far: 121698.4
Subtracting 2744 from 3350 leaves us with 606.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6060, and continue the process.

Going ahead to step 10:
When dividing 6060 by 686, we get 8 with a remainder of 572.
Put 8 as the next digit of the answer. 
Result so far: 121698.48
Deduct 5488 from 6060 and we're left with 572.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5720, and continue the process.

On to step 11:
The number 686 fits into 5720 8 times, leaving a remainder of 232.
Put 8 as the next digit of the answer. 
Result so far: 121698.488
Subtract 5488 from 5720 to get 232.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2320, and continue the process.

The final outcome is 121698.488, with a leftover of 0.0232.