Let's divide 858840 by 9
We're looking to find how many times 9 goes into 858840.

Going ahead to step 1:
When dividing 8 by 9, we get 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Include the next digit (5) from the dividend after 8, then repeat: 85 / 9

Step 2:
The number 9 fits into 85 9 times, leaving a remainder of 4.
Use 9 as the next digit of our solution. 
Result so far: 9.0
Subtracting 81 from 85 leaves us with 4.
Append the next digit (8) from the dividend to 4 and continue with: 48 / 9

Going ahead to step 3:
9 can be fit into 48 5 times, resulting in a remainder of 3.
Use 5 as the next digit of our solution. 
Result so far: 95.0
Deduct 45 from 48 and we're left with 3.
Fetch the next digit (8) from the dividend, attach it to 3 and continue: 38 / 9

Moving on to step 4:
9 can be fit into 38 4 times, resulting in a remainder of 2.
The number 4 becomes the next digit in our result. 
Result so far: 954.0
Deduct 36 from 38 and we're left with 2.
Append the next digit (4) from the dividend to 2 and continue with: 24 / 9

Advancing to step 5:
9 can be fit into 24 2 times, resulting in a remainder of 6.
Put 2 as the next digit of the answer. 
Result so far: 9542.0
Deduct 18 from 24 and we're left with 6.
Grab the next digit (0) from the dividend, add it to 6, then carry on: 60 / 9

Advancing to step 6:
If we divide 60 by 9, we get 6 and a remainder of 6.
The number 6 becomes the next digit in our result. 
Result so far: 95426.0
The remainder is 6 after subtracting 54 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 7:
The number 9 fits into 60 6 times, leaving a remainder of 6.
Put 6 as the next digit of the answer. 
Result so far: 95426.6
If we take 54 away from 60, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 8:
The number 9 fits into 60 6 times, leaving a remainder of 6.
The next digit of our result is 6. 
Result so far: 95426.66
If we subtract 54 from 60, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Our division results in 95426.66 with a remaining 0.006.