455872 ÷ 40 
We're looking to find how many times 40 goes into 455872.

Let's proceed to step 1:
When dividing 4 by 40, we get 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Include the next digit (5) from the dividend after 4, then repeat: 45 / 40

On to step 2:
40 can be fit into 45 1 times, resulting in a remainder of 5.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 5 after subtracting 40 from 45.
Include the next digit (5) from the dividend after 5, then repeat: 55 / 40

Going ahead to step 3:
55 divided by 40 is 1 with a remainder of 15.
Use 1 as the next digit of our solution. 
Result so far: 11.0
Deduct 40 from 55 and we're left with 15.
Fetch the next digit (8) from the dividend, attach it to 15 and continue: 158 / 40

Step 4:
40 can be fit into 158 3 times, resulting in a remainder of 38.
Write down 3 as next digit of the result. 
Result so far: 113.0
The remainder is 38 after subtracting 120 from 158.
Fetch the next digit (7) from the dividend, attach it to 38 and continue: 387 / 40

Moving on to step 5:
40 can be fit into 387 9 times, resulting in a remainder of 27.
The number 9 becomes the next digit in our result. 
Result so far: 1139.0
Deduct 360 from 387 and we're left with 27.
Include the next digit (2) from the dividend after 27, then repeat: 272 / 40

Let's proceed to step 6:
40 goes into 272 6 times with a remainder of 32.
The next digit of our result is 6. 
Result so far: 11396.0
The remainder is 32 after subtracting 240 from 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Moving on to step 7:
40 can be fit into 320 8 times, resulting in a remainder of 0.
Put 8 as the next digit of the answer. 
Result so far: 11396.8
The remainder is 0 after subtracting 320 from 320.
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:
40 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 11396.8
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.

Advancing to step 9:
0 divided by 40 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 11396.8
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.

The final outcome is 11396.8, with a leftover of 0.0.