We're dividing 455715 by 42 
Let's see how many times 42 fits into 455715.

Going ahead to step 1:
42 goes into 4 0 times with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Grab the next digit (5) from the dividend, add it to 4, then carry on: 45 / 42

Going ahead to step 2:
The number 42 fits into 45 1 times, leaving a remainder of 3.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 42 from 45 leaves us with 3.
Take the next digit (5) from the dividend and append it to 3, then repeat: 35 / 42

Moving on to step 3:
42 goes into 35 0 times with a remainder of 35.
Write down 0 as next digit of the result. 
Result so far: 10.0
The remainder is 35 after subtracting 0 from 35.
Grab the next digit (7) from the dividend, add it to 35, then carry on: 357 / 42

Moving on to step 4:
357 divided by 42 is 8 with a remainder of 21.
Use 8 as the next digit of our solution. 
Result so far: 108.0
The remainder is 21 after subtracting 336 from 357.
Bring next digit (1) of the dividend behind the 21 and repeat the process: 211 / 42

Moving on to step 5:
The number 42 fits into 211 5 times, leaving a remainder of 1.
Use 5 as the next digit of our solution. 
Result so far: 1085.0
If we subtract 210 from 211, we get 1.
Bring next digit (5) of the dividend behind the 1 and repeat the process: 15 / 42

On to step 6:
15 divided by 42 is 0 with a remainder of 15.
Use 0 as the next digit of our solution. 
Result so far: 10850.0
If we take 0 away from 15, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 7:
When dividing 150 by 42, we get 3 with a remainder of 24.
The number 3 becomes the next digit in our result. 
Result so far: 10850.3
The remainder is 24 after subtracting 126 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 8:
The number 42 fits into 240 5 times, leaving a remainder of 30.
Use 5 as the next digit of our solution. 
Result so far: 10850.35
Deduct 210 from 240 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 9:
300 divided by 42 is 7 with a remainder of 6.
The number 7 becomes the next digit in our result. 
Result so far: 10850.357
Subtracting 294 from 300 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 10:
60 divided by 42 is 1 with a remainder of 18.
The number 1 becomes the next digit in our result. 
Result so far: 10850.3571
The remainder is 18 after subtracting 42 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 11:
If we divide 180 by 42, we get 4 and a remainder of 12.
Put 4 as the next digit of the answer. 
Result so far: 10850.35714
If we subtract 168 from 180, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 12:
If we divide 120 by 42, we get 2 and a remainder of 36.
The next digit of our result is 2. 
Result so far: 10850.357142
The remainder is 36 after subtracting 84 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Advancing to step 13:
If we divide 360 by 42, we get 8 and a remainder of 24.
Use 8 as the next digit of our solution. 
Result so far: 10850.3571428
Subtract 336 from 360 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 14:
When dividing 240 by 42, we get 5 with a remainder of 30.
Write down 5 as next digit of the result. 
Result so far: 10850.35714285
Subtracting 210 from 240 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

The final outcome is 10850.35714285, with a leftover of 3e-08.