We're dividing 431193 by 1 
We want to divide 431193 by 1.

Step 1:
The number 1 fits into 4 4 times, leaving a remainder of 0.
Put 4 as the next digit of the answer. 
Result so far: 4.0
The remainder is 0 after subtracting 4 from 4.
Take the next digit (3) from the dividend and append it to 0, then repeat: 3 / 1

On to step 2:
3 divided by 1 is 3 with a remainder of 0.
The next digit of our result is 3. 
Result so far: 43.0
Subtracting 3 from 3 leaves us with 0.
Include the next digit (1) from the dividend after 0, then repeat: 1 / 1

Moving on to step 3:
The number 1 fits into 1 1 times, leaving a remainder of 0.
Use 1 as the next digit of our solution. 
Result so far: 431.0
Deduct 1 from 1 and we're left with 0.
Bring next digit (1) of the dividend behind the 0 and repeat the process: 1 / 1

Advancing to step 4:
1 can be fit into 1 1 times, resulting in a remainder of 0.
Write down 1 as next digit of the result. 
Result so far: 4311.0
Subtract 1 from 1 to get 0.
Append the next digit (9) from the dividend to 0 and continue with: 9 / 1

Let's proceed to step 5:
The number 1 fits into 9 9 times, leaving a remainder of 0.
The next digit of our result is 9. 
Result so far: 43119.0
Subtracting 9 from 9 leaves us with 0.
Take the next digit (3) from the dividend and append it to 0, then repeat: 3 / 1

Let's proceed to step 6:
1 can be fit into 3 3 times, resulting in a remainder of 0.
The number 3 becomes the next digit in our result. 
Result so far: 431193.0
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:
1 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 431193.0
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 8:
0 divided by 1 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 431193.0
Subtracting 0 from 0 leaves us 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.

After the division, we end up with 431193.0 and a remainder of 0.0.