3117187 divided by 851 
We want to divide 3117187 by 851.

Advancing to step 1:
3 divided by 851 is 0 with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Fetch the next digit (1) from the dividend, attach it to 3 and continue: 31 / 851

Going ahead to step 2:
851 goes into 31 0 times with a remainder of 31.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 31 after subtracting 0 from 31.
Bring next digit (1) of the dividend behind the 31 and repeat the process: 311 / 851

Moving on to step 3:
The number 851 fits into 311 0 times, leaving a remainder of 311.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 311, we get 311.
Append the next digit (7) from the dividend to 311 and continue with: 3117 / 851

Step 4:
If we divide 3117 by 851, we get 3 and a remainder of 564.
Use 3 as the next digit of our solution. 
Result so far: 3.0
If we subtract 2553 from 3117, we get 564.
Fetch the next digit (1) from the dividend, attach it to 564 and continue: 5641 / 851

Advancing to step 5:
851 can be fit into 5641 6 times, resulting in a remainder of 535.
Put 6 as the next digit of the answer. 
Result so far: 36.0
Deduct 5106 from 5641 and we're left with 535.
Bring next digit (8) of the dividend behind the 535 and repeat the process: 5358 / 851

Moving on to step 6:
851 can be fit into 5358 6 times, resulting in a remainder of 252.
The number 6 becomes the next digit in our result. 
Result so far: 366.0
Subtracting 5106 from 5358 leaves us with 252.
Append the next digit (7) from the dividend to 252 and continue with: 2527 / 851

On to step 7:
If we divide 2527 by 851, we get 2 and a remainder of 825.
Write down 2 as next digit of the result. 
Result so far: 3662.0
The remainder is 825 after subtracting 1702 from 2527.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8250, and continue the process.

Going ahead to step 8:
851 goes into 8250 9 times with a remainder of 591.
Record the quotient 9 as the next digit in the result. 
Result so far: 3662.9
Subtract 7659 from 8250 to get 591.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5910, and continue the process.

Going ahead to step 9:
If we divide 5910 by 851, we get 6 and a remainder of 804.
Write down 6 as next digit of the result. 
Result so far: 3662.96
Deduct 5106 from 5910 and we're left with 804.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8040, and continue the process.

Moving on to step 10:
The number 851 fits into 8040 9 times, leaving a remainder of 381.
Write down 9 as next digit of the result. 
Result so far: 3662.969
If we take 7659 away from 8040, we end up with 381.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3810, and continue the process.

On to step 11:
851 goes into 3810 4 times with a remainder of 406.
The next digit of our result is 4. 
Result so far: 3662.9694
Subtract 3404 from 3810 to get 406.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4060, and continue the process.

On to step 12:
851 can be fit into 4060 4 times, resulting in a remainder of 656.
The number 4 becomes the next digit in our result. 
Result so far: 3662.96944
If we take 3404 away from 4060, we end up with 656.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6560, and continue the process.

The final result is 3662.96944 with a remainder of 0.000656.