861021 divided by 10 
We want to divide 861021 by 10.

Moving on to step 1:
10 goes into 8 0 times with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 10

Advancing to step 2:
The number 10 fits into 86 8 times, leaving a remainder of 6.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
If we subtract 80 from 86, we get 6.
Fetch the next digit (1) from the dividend, attach it to 6 and continue: 61 / 10

Advancing to step 3:
10 can be fit into 61 6 times, resulting in a remainder of 1.
Use 6 as the next digit of our solution. 
Result so far: 86.0
If we subtract 60 from 61, we get 1.
Include the next digit (0) from the dividend after 1, then repeat: 10 / 10

On to step 4:
10 goes into 10 1 times with a remainder of 0.
The next digit of our result is 1. 
Result so far: 861.0
Deduct 10 from 10 and we're left with 0.
Grab the next digit (2) from the dividend, add it to 0, then carry on: 2 / 10

Going ahead to step 5:
10 can be fit into 2 0 times, resulting in a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 8610.0
If we take 0 away from 2, we end up with 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 10

Moving on to step 6:
When dividing 21 by 10, we get 2 with a remainder of 1.
Record the quotient 2 as the next digit in the result. 
Result so far: 86102.0
If we take 20 away from 21, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 7:
If we divide 10 by 10, we get 1 and a remainder of 0.
The number 1 becomes the next digit in our result. 
Result so far: 86102.1
If we take 10 away from 10, 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.

Let's proceed to step 8:
10 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 86102.1
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 9:
0 divided by 10 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 86102.1
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.

Our division results in 86102.1 with a remaining 0.0.