663807 ÷ 1 
Our goal is to divide 663807 by 1.

On to step 1:
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: 6.0
If we subtract 6 from 6, we get 0.
Append the next digit (6) from the dividend to 0 and continue with: 6 / 1

Going ahead to step 2:
When dividing 6 by 1, we get 6 with a remainder of 0.
Write down 6 as next digit of the result. 
Result so far: 66.0
Subtract 6 from 6 to get 0.
Fetch the next digit (3) from the dividend, attach it to 0 and continue: 3 / 1

Let's proceed to step 3:
1 can be fit into 3 3 times, resulting in a remainder of 0.
Use 3 as the next digit of our solution. 
Result so far: 663.0
If we subtract 3 from 3, we get 0.
Include the next digit (8) from the dividend after 0, then repeat: 8 / 1

Going ahead to step 4:
When dividing 8 by 1, we get 8 with a remainder of 0.
The next digit of our result is 8. 
Result so far: 6638.0
Subtracting 8 from 8 leaves us with 0.
Append the next digit (0) from the dividend to 0 and continue with: 0 / 1

Moving on to step 5:
0 divided by 1 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 66380.0
The remainder is 0 after subtracting 0 from 0.
Bring next digit (7) of the dividend behind the 0 and repeat the process: 7 / 1

Let's proceed to step 6:
1 goes into 7 7 times with a remainder of 0.
The next digit of our result is 7. 
Result so far: 663807.0
If we subtract 7 from 7, 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.

Advancing to 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: 663807.0
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.

Let's proceed to step 8:
If we divide 0 by 1, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 663807.0
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.

The final outcome is 663807.0, with a leftover of 0.0.