We're dividing 6439205 by 1 
We want to divide 6439205 by 1.

Step 1:
6 divided by 1 is 6 with a remainder of 0.
The next digit of our result is 6. 
Result so far: 6.0
If we subtract 6 from 6, we get 0.
Bring next digit (4) of the dividend behind the 0 and repeat the process: 4 / 1

Moving on to step 2:
4 divided by 1 is 4 with a remainder of 0.
Record the quotient 4 as the next digit in the result. 
Result so far: 64.0
Subtract 4 from 4 to get 0.
Include the next digit (3) from the dividend after 0, then repeat: 3 / 1

Advancing to step 3:
The number 1 fits into 3 3 times, leaving a remainder of 0.
The number 3 becomes the next digit in our result. 
Result so far: 643.0
Deduct 3 from 3 and we're left with 0.
Fetch the next digit (9) from the dividend, attach it to 0 and continue: 9 / 1

Going ahead to step 4:
When dividing 9 by 1, we get 9 with a remainder of 0.
The next digit of our result is 9. 
Result so far: 6439.0
If we take 9 away from 9, we end up with 0.
Fetch the next digit (2) from the dividend, attach it to 0 and continue: 2 / 1

Step 5:
1 goes into 2 2 times with a remainder of 0.
Record the quotient 2 as the next digit in the result. 
Result so far: 64392.0
If we subtract 2 from 2, we get 0.
Bring next digit (0) of the dividend behind the 0 and repeat the process: 0 / 1

Advancing to step 6:
0 divided by 1 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 643920.0
If we take 0 away from 0, we end up with 0.
Include the next digit (5) from the dividend after 0, then repeat: 5 / 1

Let's proceed to step 7:
5 divided by 1 is 5 with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 6439205.0
Subtract 5 from 5 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.

Let's proceed to step 8:
1 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 6439205.0
Subtract 0 from 0 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.

On to step 9:
If we divide 0 by 1, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 6439205.0
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.

The quotient of the division is 6439205.0, and the remainder is 0.0.