We're dividing 403463 by 1 
We want to divide 403463 by 1.

Step 1:
The number 1 fits into 4 4 times, leaving a remainder of 0.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we subtract 4 from 4, we get 0.
Bring next digit (0) of the dividend behind the 0 and repeat the process: 0 / 1

Advancing to step 2:
If we divide 0 by 1, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 40.0
Subtracting 0 from 0 leaves us with 0.
Take the next digit (3) from the dividend and append it to 0, then repeat: 3 / 1

On to step 3:
1 can be fit into 3 3 times, resulting in a remainder of 0.
The next digit of our result is 3. 
Result so far: 403.0
The remainder is 0 after subtracting 3 from 3.
Take the next digit (4) from the dividend and append it to 0, then repeat: 4 / 1

Let's proceed to step 4:
If we divide 4 by 1, we get 4 and a remainder of 0.
Record the quotient 4 as the next digit in the result. 
Result so far: 4034.0
If we take 4 away from 4, we end up with 0.
Include the next digit (6) from the dividend after 0, then repeat: 6 / 1

Going ahead to step 5:
If we divide 6 by 1, we get 6 and a remainder of 0.
The next digit of our result is 6. 
Result so far: 40346.0
Subtracting 6 from 6 leaves us with 0.
Grab the next digit (3) from the dividend, add it to 0, then carry on: 3 / 1

Advancing to step 6:
1 goes into 3 3 times with a remainder of 0.
Write down 3 as next digit of the result. 
Result so far: 403463.0
Deduct 3 from 3 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.
Use 0 as the next digit of our solution. 
Result so far: 403463.0
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 8:
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: 403463.0
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.

The final result is 403463.0 with a remainder of 0.0.