We look at the division of 4393431 by 455 
Let's see how many times 455 fits into 4393431.

Going ahead to step 1:
455 goes into 4 0 times with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Grab the next digit (3) from the dividend, add it to 4, then carry on: 43 / 455

Going ahead to step 2:
The number 455 fits into 43 0 times, leaving a remainder of 43.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 43 to get 43.
Append the next digit (9) from the dividend to 43 and continue with: 439 / 455

On to step 3:
The number 455 fits into 439 0 times, leaving a remainder of 439.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 439 and we're left with 439.
Bring next digit (3) of the dividend behind the 439 and repeat the process: 4393 / 455

Moving on to step 4:
The number 455 fits into 4393 9 times, leaving a remainder of 298.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
Subtract 4095 from 4393 to get 298.
Fetch the next digit (4) from the dividend, attach it to 298 and continue: 2984 / 455

Going ahead to step 5:
If we divide 2984 by 455, we get 6 and a remainder of 254.
Put 6 as the next digit of the answer. 
Result so far: 96.0
The remainder is 254 after subtracting 2730 from 2984.
Take the next digit (3) from the dividend and append it to 254, then repeat: 2543 / 455

Moving on to step 6:
When dividing 2543 by 455, we get 5 with a remainder of 268.
Record the quotient 5 as the next digit in the result. 
Result so far: 965.0
Subtract 2275 from 2543 to get 268.
Bring next digit (1) of the dividend behind the 268 and repeat the process: 2681 / 455

Moving on to step 7:
When dividing 2681 by 455, we get 5 with a remainder of 406.
The number 5 becomes the next digit in our result. 
Result so far: 9655.0
Subtract 2275 from 2681 to get 406.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4060, and continue the process.

Moving on to step 8:
The number 455 fits into 4060 8 times, leaving a remainder of 420.
The number 8 becomes the next digit in our result. 
Result so far: 9655.8
Deduct 3640 from 4060 and we're left with 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Let's proceed to step 9:
4200 divided by 455 is 9 with a remainder of 105.
Put 9 as the next digit of the answer. 
Result so far: 9655.89
Deduct 4095 from 4200 and we're left with 105.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

On to step 10:
The number 455 fits into 1050 2 times, leaving a remainder of 140.
The next digit of our result is 2. 
Result so far: 9655.892
The remainder is 140 after subtracting 910 from 1050.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Step 11:
455 goes into 1400 3 times with a remainder of 35.
Write down 3 as next digit of the result. 
Result so far: 9655.8923
Deduct 1365 from 1400 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Moving on to step 12:
The number 455 fits into 350 0 times, leaving a remainder of 350.
The number 0 becomes the next digit in our result. 
Result so far: 9655.8923
If we take 0 away from 350, we end up with 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Going ahead to step 13:
3500 divided by 455 is 7 with a remainder of 315.
Use 7 as the next digit of our solution. 
Result so far: 9655.892307
Deduct 3185 from 3500 and we're left with 315.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3150, and continue the process.

Moving on to step 14:
3150 divided by 455 is 6 with a remainder of 420.
Write down 6 as next digit of the result. 
Result so far: 9655.8923076
If we take 2730 away from 3150, we end up with 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Advancing to step 15:
When dividing 4200 by 455, we get 9 with a remainder of 105.
The next digit of our result is 9. 
Result so far: 9655.89230769
Subtract 4095 from 4200 to get 105.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

The final outcome is 9655.89230769, with a leftover of 1.05e-07.