85164151 ÷ 686 
Our goal is to divide 85164151 by 686.

Step 1:
686 can be fit into 8 0 times, resulting in a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Take the next digit (5) from the dividend and append it to 8, then repeat: 85 / 686

Step 2:
If we divide 85 by 686, we get 0 and a remainder of 85.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 85, we get 85.
Include the next digit (1) from the dividend after 85, then repeat: 851 / 686

Going ahead to step 3:
686 can be fit into 851 1 times, resulting in a remainder of 165.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 686 from 851 and we're left with 165.
Take the next digit (6) from the dividend and append it to 165, then repeat: 1656 / 686

Going ahead to step 4:
1656 divided by 686 is 2 with a remainder of 284.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
If we take 1372 away from 1656, we end up with 284.
Take the next digit (4) from the dividend and append it to 284, then repeat: 2844 / 686

Step 5:
When dividing 2844 by 686, we get 4 with a remainder of 100.
Record the quotient 4 as the next digit in the result. 
Result so far: 124.0
Subtracting 2744 from 2844 leaves us with 100.
Fetch the next digit (1) from the dividend, attach it to 100 and continue: 1001 / 686

Going ahead to step 6:
686 can be fit into 1001 1 times, resulting in a remainder of 315.
The next digit of our result is 1. 
Result so far: 1241.0
Deduct 686 from 1001 and we're left with 315.
Take the next digit (5) from the dividend and append it to 315, then repeat: 3155 / 686

On to step 7:
686 goes into 3155 4 times with a remainder of 411.
Put 4 as the next digit of the answer. 
Result so far: 12414.0
If we take 2744 away from 3155, we end up with 411.
Append the next digit (1) from the dividend to 411 and continue with: 4111 / 686

Moving on to step 8:
The number 686 fits into 4111 5 times, leaving a remainder of 681.
Use 5 as the next digit of our solution. 
Result so far: 124145.0
Deduct 3430 from 4111 and we're left with 681.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6810, and continue the process.

Advancing to step 9:
The number 686 fits into 6810 9 times, leaving a remainder of 636.
The next digit of our result is 9. 
Result so far: 124145.9
Deduct 6174 from 6810 and we're left with 636.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6360, and continue the process.

Moving on to step 10:
686 can be fit into 6360 9 times, resulting in a remainder of 186.
Put 9 as the next digit of the answer. 
Result so far: 124145.99
Deduct 6174 from 6360 and we're left with 186.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1860, and continue the process.

Our division results in 124145.99 with a remaining 0.186.