We look at the division of 851864 by 9 
We're looking to find how many times 9 goes into 851864.

Advancing to step 1:
The number 9 fits into 8 0 times, leaving a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Fetch the next digit (5) from the dividend, attach it to 8 and continue: 85 / 9

Going ahead to step 2:
9 goes into 85 9 times with a remainder of 4.
The next digit of our result is 9. 
Result so far: 9.0
The remainder is 4 after subtracting 81 from 85.
Grab the next digit (1) from the dividend, add it to 4, then carry on: 41 / 9

Advancing to step 3:
9 can be fit into 41 4 times, resulting in a remainder of 5.
Use 4 as the next digit of our solution. 
Result so far: 94.0
The remainder is 5 after subtracting 36 from 41.
Include the next digit (8) from the dividend after 5, then repeat: 58 / 9

Step 4:
9 goes into 58 6 times with a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 946.0
Deduct 54 from 58 and we're left with 4.
Grab the next digit (6) from the dividend, add it to 4, then carry on: 46 / 9

Going ahead to step 5:
46 divided by 9 is 5 with a remainder of 1.
The next digit of our result is 5. 
Result so far: 9465.0
If we take 45 away from 46, we end up with 1.
Fetch the next digit (4) from the dividend, attach it to 1 and continue: 14 / 9

Advancing to step 6:
9 can be fit into 14 1 times, resulting in a remainder of 5.
Write down 1 as next digit of the result. 
Result so far: 94651.0
If we subtract 9 from 14, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 7:
9 can be fit into 50 5 times, resulting in a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 94651.5
If we subtract 45 from 50, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 8:
9 goes into 50 5 times with a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 94651.55
Subtract 45 from 50 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

The final outcome is 94651.55, with a leftover of 0.005.