Let's divide 863579 by 1
Our goal is to divide 863579 by 1.

Moving on to step 1:
8 divided by 1 is 8 with a remainder of 0.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Deduct 8 from 8 and we're left with 0.
Grab the next digit (6) from the dividend, add it to 0, then carry on: 6 / 1

Moving on to step 2:
1 can be fit into 6 6 times, resulting in a remainder of 0.
Use 6 as the next digit of our solution. 
Result so far: 86.0
The remainder is 0 after subtracting 6 from 6.
Grab the next digit (3) from the dividend, add it to 0, then carry on: 3 / 1

On to step 3:
When dividing 3 by 1, we get 3 with a remainder of 0.
Write down 3 as next digit of the result. 
Result so far: 863.0
If we take 3 away from 3, we end up with 0.
Append the next digit (5) from the dividend to 0 and continue with: 5 / 1

On to step 4:
The number 1 fits into 5 5 times, leaving a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 8635.0
If we take 5 away from 5, we end up with 0.
Include the next digit (7) from the dividend after 0, then repeat: 7 / 1

Step 5:
1 can be fit into 7 7 times, resulting in a remainder of 0.
Use 7 as the next digit of our solution. 
Result so far: 86357.0
Subtracting 7 from 7 leaves us with 0.
Fetch the next digit (9) from the dividend, attach it to 0 and continue: 9 / 1

Let's proceed to step 6:
1 goes into 9 9 times with a remainder of 0.
The number 9 becomes the next digit in our result. 
Result so far: 863579.0
Deduct 9 from 9 and we're left 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.

Step 7:
The number 1 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 863579.0
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.

Step 8:
If we divide 0 by 1, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 863579.0
Deduct 0 from 0 and we're left 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.

The final outcome is 863579.0, with a leftover of 0.0.