We look at the division of 868429 by 10 
We want to divide 868429 by 10.

On to step 1:
The number 10 fits into 8 0 times, leaving 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.
Fetch the next digit (6) from the dividend, attach it to 8 and continue: 86 / 10

Going ahead to step 2:
When dividing 86 by 10, we get 8 with a remainder of 6.
The next digit of our result is 8. 
Result so far: 8.0
If we subtract 80 from 86, we get 6.
Bring next digit (8) of the dividend behind the 6 and repeat the process: 68 / 10

Let's proceed to step 3:
When dividing 68 by 10, we get 6 with a remainder of 8.
The next digit of our result is 6. 
Result so far: 86.0
Deduct 60 from 68 and we're left with 8.
Grab the next digit (4) from the dividend, add it to 8, then carry on: 84 / 10

Going ahead to step 4:
84 divided by 10 is 8 with a remainder of 4.
Put 8 as the next digit of the answer. 
Result so far: 868.0
Subtracting 80 from 84 leaves us with 4.
Append the next digit (2) from the dividend to 4 and continue with: 42 / 10

Going ahead to step 5:
If we divide 42 by 10, we get 4 and a remainder of 2.
Put 4 as the next digit of the answer. 
Result so far: 8684.0
If we subtract 40 from 42, we get 2.
Take the next digit (9) from the dividend and append it to 2, then repeat: 29 / 10

On to step 6:
When dividing 29 by 10, we get 2 with a remainder of 9.
Put 2 as the next digit of the answer. 
Result so far: 86842.0
Subtracting 20 from 29 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 7:
10 can be fit into 90 9 times, resulting in a remainder of 0.
The number 9 becomes the next digit in our result. 
Result so far: 86842.9
Subtract 90 from 90 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 8:
The number 10 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 86842.9
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 9:
When dividing 0 by 10, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 86842.9
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 86842.9 with a remaining 0.0.