We're dividing 12850045 by 686 
We want to divide 12850045 by 686.

Advancing to step 1:
686 can be fit into 1 0 times, resulting in a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 686

Let's proceed to step 2:
When dividing 12 by 686, we get 0 with a remainder of 12.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 12 to get 12.
Bring next digit (8) of the dividend behind the 12 and repeat the process: 128 / 686

Let's proceed to step 3:
The number 686 fits into 128 0 times, leaving a remainder of 128.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 128 to get 128.
Include the next digit (5) from the dividend after 128, then repeat: 1285 / 686

Going ahead to step 4:
686 can be fit into 1285 1 times, resulting in a remainder of 599.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 686 away from 1285, we end up with 599.
Bring next digit (0) of the dividend behind the 599 and repeat the process: 5990 / 686

On to step 5:
686 goes into 5990 8 times with a remainder of 502.
Write down 8 as next digit of the result. 
Result so far: 18.0
Deduct 5488 from 5990 and we're left with 502.
Take the next digit (0) from the dividend and append it to 502, then repeat: 5020 / 686

Moving on to step 6:
The number 686 fits into 5020 7 times, leaving a remainder of 218.
Record the quotient 7 as the next digit in the result. 
Result so far: 187.0
If we take 4802 away from 5020, we end up with 218.
Grab the next digit (4) from the dividend, add it to 218, then carry on: 2184 / 686

Advancing to step 7:
686 can be fit into 2184 3 times, resulting in a remainder of 126.
Record the quotient 3 as the next digit in the result. 
Result so far: 1873.0
Subtract 2058 from 2184 to get 126.
Append the next digit (5) from the dividend to 126 and continue with: 1265 / 686

Advancing to step 8:
The number 686 fits into 1265 1 times, leaving a remainder of 579.
Record the quotient 1 as the next digit in the result. 
Result so far: 18731.0
Deduct 686 from 1265 and we're left with 579.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5790, and continue the process.

Step 9:
5790 divided by 686 is 8 with a remainder of 302.
Write down 8 as next digit of the result. 
Result so far: 18731.8
Subtract 5488 from 5790 to get 302.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3020, and continue the process.

Going ahead to step 10:
686 goes into 3020 4 times with a remainder of 276.
Record the quotient 4 as the next digit in the result. 
Result so far: 18731.84
The remainder is 276 after subtracting 2744 from 3020.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2760, and continue the process.

Going ahead to step 11:
The number 686 fits into 2760 4 times, leaving a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 18731.844
The remainder is 16 after subtracting 2744 from 2760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Our division results in 18731.844 with a remaining 0.0016.